diff --git a/core/modules/content_translation/migrations/d6_taxonomy_term_localized_translation.yml b/core/modules/content_translation/migrations/d6_taxonomy_term_localized_translation.yml
new file mode 100644
index 0000000000000000000000000000000000000000..980baf4ae6a994a73a9a2a11c61f4cb48314655c
--- /dev/null
+++ b/core/modules/content_translation/migrations/d6_taxonomy_term_localized_translation.yml
@@ -0,0 +1,44 @@
+id: d6_taxonomy_term_localized_translation
+label: Taxonomy localized term translations
+migration_tags:
+  - Drupal 6
+  - Content
+  - Multilingual
+source:
+  plugin: d6_term_localized_translation
+  translations: true
+process:
+  # If you are using this file to build a custom migration consider removing
+  # the tid field to allow incremental migrations.
+  tid: tid
+  langcode: language
+  vid:
+    plugin: migration
+    migration: d6_taxonomy_vocabulary
+    source: vid
+  name:
+    -
+      plugin: callback
+      source:
+        - name_translated
+        - name
+      callable: array_filter
+    -
+      plugin: callback
+      callable: current
+  description:
+    -
+      plugin: callback
+      source:
+        - description_translated
+        - description
+      callable: array_filter
+    -
+      plugin: callback
+      callable: current
+destination:
+  plugin: entity:taxonomy_term
+  translations: true
+migration_dependencies:
+  required:
+    - d6_taxonomy_term
diff --git a/core/modules/content_translation/tests/src/Kernel/Migrate/d6/MigrateTaxonomyTermTranslationTest.php b/core/modules/content_translation/tests/src/Kernel/Migrate/d6/MigrateTaxonomyTermTranslationTest.php
index 3e32406d28db764bb783c90f2236ffe3ee039e88..1baf584efe01333b26aa04cef3780e1dc97430d8 100644
--- a/core/modules/content_translation/tests/src/Kernel/Migrate/d6/MigrateTaxonomyTermTranslationTest.php
+++ b/core/modules/content_translation/tests/src/Kernel/Migrate/d6/MigrateTaxonomyTermTranslationTest.php
@@ -108,7 +108,12 @@ protected function assertHierarchy($vid, $tid, array $parent_ids) {
 
     $this->assertArrayHasKey($tid, $this->treeData[$vid], "Term $tid exists in taxonomy tree");
     $term = $this->treeData[$vid][$tid];
-    $this->assertEquals($parent_ids, array_filter($term->parents), "Term $tid has correct parents in taxonomy tree");
+    // PostgreSQL, MySQL and SQLite may not return the parent terms in the same
+    // order so sort before testing.
+    sort($parent_ids);
+    $actual_terms = array_filter($term->parents);
+    sort($actual_terms);
+    $this->assertEquals($parent_ids, $actual_terms, "Term $tid has correct parents in taxonomy tree");
   }
 
   /**
diff --git a/core/modules/language/tests/src/Kernel/Migrate/d6/MigrateLanguageContentTaxonomyVocabularySettingsTest.php b/core/modules/language/tests/src/Kernel/Migrate/d6/MigrateLanguageContentTaxonomyVocabularySettingsTest.php
index 1f7fd035d4c0b1b58ce79e94a4a86e369909bcd0..b7b3f4b8f3919320cfcf0d2901a59960fd39c9fa 100644
--- a/core/modules/language/tests/src/Kernel/Migrate/d6/MigrateLanguageContentTaxonomyVocabularySettingsTest.php
+++ b/core/modules/language/tests/src/Kernel/Migrate/d6/MigrateLanguageContentTaxonomyVocabularySettingsTest.php
@@ -45,9 +45,9 @@ public function testLanguageContentTaxonomy() {
     // Set language to vocabulary.
     $this->assertLanguageContentSettings($target_entity, 'vocabulary_2_i_1_', 'fr', FALSE, ['enabled' => FALSE]);
     // Localize terms.
-    $this->assertLanguageContentSettings($target_entity, 'vocabulary_3_i_2_', LanguageInterface::LANGCODE_SITE_DEFAULT, TRUE, ['enabled' => TRUE]);
+    $this->assertLanguageContentSettings($target_entity, 'vocabulary_3_i_2_', LanguageInterface::LANGCODE_SITE_DEFAULT, TRUE, ['enabled' => FALSE]);
     // None translation enabled.
-    $this->assertLanguageContentSettings($target_entity, 'vocabulary_name_much_longer_than', LanguageInterface::LANGCODE_SITE_DEFAULT, FALSE, ['enabled' => FALSE]);
+    $this->assertLanguageContentSettings($target_entity, 'vocabulary_name_much_longer_than', LanguageInterface::LANGCODE_SITE_DEFAULT, TRUE, ['enabled' => TRUE]);
     $this->assertLanguageContentSettings($target_entity, 'tags', LanguageInterface::LANGCODE_SITE_DEFAULT, FALSE, ['enabled' => FALSE]);
     $this->assertLanguageContentSettings($target_entity, 'forums', LanguageInterface::LANGCODE_SITE_DEFAULT, FALSE, ['enabled' => FALSE]);
     $this->assertLanguageContentSettings($target_entity, 'type', LanguageInterface::LANGCODE_SITE_DEFAULT, FALSE, ['enabled' => FALSE]);
diff --git a/core/modules/migrate_drupal/tests/fixtures/drupal6.php b/core/modules/migrate_drupal/tests/fixtures/drupal6.php
index 185a7b6a78d9446bab1dfc09866f012778241229..389a4df56b2082abf9a801ce184847a2c352ab6a 100644
--- a/core/modules/migrate_drupal/tests/fixtures/drupal6.php
+++ b/core/modules/migrate_drupal/tests/fixtures/drupal6.php
@@ -10071,6 +10071,30 @@
   'objectindex' => '0',
   'format' => '0',
 ))
+->values(array(
+  'lid' => '1692',
+  'objectid' => '14',
+  'type' => 'term',
+  'property' => 'name',
+  'objectindex' => '14',
+  'format' => '0',
+))
+->values(array(
+  'lid' => '1693',
+  'objectid' => '15',
+  'type' => 'term',
+  'property' => 'name',
+  'objectindex' => '15',
+  'format' => '0',
+))
+->values(array(
+  'lid' => '1694',
+  'objectid' => '14',
+  'type' => 'term',
+  'property' => 'description',
+  'objectindex' => '14',
+  'format' => '0',
+))
 ->execute();
 
 $connection->schema()->createTable('i18n_variable', array(
@@ -22642,6 +22666,27 @@
   'source' => 'White',
   'version' => '1',
 ))
+->values(array(
+  'lid' => '1692',
+  'location' => 'term:14:name',
+  'textgroup' => 'taxonomy',
+  'source' => 'Talos IV',
+  'version' => '1',
+))
+->values(array(
+  'lid' => '1693',
+  'location' => 'term:15:name',
+  'textgroup' => 'taxonomy',
+  'source' => 'Vulcan',
+  'version' => '1',
+))
+->values(array(
+  'lid' => '1694',
+  'location' => 'term:14:description',
+  'textgroup' => 'taxonomy',
+  'source' => 'The home of Captain Christopher Pike.',
+  'version' => '1',
+))
 ->execute();
 
 $connection->schema()->createTable('locales_target', array(
@@ -27718,6 +27763,30 @@
   'plural' => '0',
   'i18n_status' => '0',
 ))
+->values(array(
+  'lid' => '1672',
+  'translation' => 'fr - Type',
+  'language' => 'fr',
+  'plid' => '0',
+  'plural' => '0',
+  'i18n_status' => '0',
+))
+->values(array(
+  'lid' => '1692',
+  'translation' => 'fr - Talos IV',
+  'language' => 'fr',
+  'plid' => '0',
+  'plural' => '0',
+  'i18n_status' => '0',
+))
+->values(array(
+  'lid' => '1694',
+  'translation' => 'fr - The home of Captain Christopher Pike.',
+  'language' => 'fr',
+  'plid' => '0',
+  'plural' => '0',
+  'i18n_status' => '0',
+))
 ->values(array(
   'lid' => '66',
   'translation' => 'zu - CCK - Aucune Intégration aux Vues',
@@ -27846,6 +27915,30 @@
   'plural' => '0',
   'i18n_status' => '0',
 ))
+->values(array(
+  'lid' => '1672',
+  'translation' => 'zu - Type',
+  'language' => 'zu',
+  'plid' => '0',
+  'plural' => '0',
+  'i18n_status' => '0',
+))
+->values(array(
+  'lid' => '1693',
+  'translation' => 'zu - Vulcan',
+  'language' => 'zu',
+  'plid' => '0',
+  'plural' => '0',
+  'i18n_status' => '0',
+))
+->values(array(
+  'lid' => '1694',
+  'translation' => 'zu - The home of Captain Christopher Pike.',
+  'language' => 'zu',
+  'plid' => '0',
+  'plural' => '0',
+  'i18n_status' => '0',
+))
 ->execute();
 
 $connection->schema()->createTable('menu_custom', array(
@@ -40934,6 +41027,28 @@
   'weight' => '0',
   'file' => 'sites/all/modules/i18n/i18n.admin.inc',
 ))
+->values(array(
+  'path' => 'admin/settings/language/i18n/variables',
+  'load_functions' => '',
+  'to_arg_functions' => '',
+  'access_callback' => 'user_access',
+  'access_arguments' => 'a:1:{i:0;s:29:"administer site configuration";}',
+  'page_callback' => 'drupal_get_form',
+  'page_arguments' => 'a:1:{i:0;s:25:"i18n_admin_variables_form";}',
+  'fit' => '31',
+  'number_parts' => '5',
+  'tab_parent' => 'admin/settings/language/i18n',
+  'tab_root' => 'admin/settings/language',
+  'title' => 'Variables',
+  'title_callback' => 't',
+  'title_arguments' => '',
+  'type' => '128',
+  'block_callback' => '',
+  'description' => 'Multilingual variables.',
+  'position' => '',
+  'weight' => '0',
+  'file' => 'sites/all/modules/i18n/i18n.admin.inc',
+))
 ->values(array(
   'path' => 'admin/settings/language/overview',
   'load_functions' => '',
@@ -47091,6 +47206,69 @@
   'language' => '',
   'trid' => '0',
 ))
+->values(array(
+  'tid' => '9',
+  'vid' => '3',
+  'name' => 'fr - term 4 of vocabulary 3',
+  'description' => '',
+  'weight' => '0',
+  'language' => 'fr',
+  'trid' => '1',
+))
+->values(array(
+  'tid' => '10',
+  'vid' => '3',
+  'name' => 'zu - term 4 of vocabulary 3',
+  'description' => '',
+  'weight' => '0',
+  'language' => 'zu',
+  'trid' => '1',
+))
+->values(array(
+  'tid' => '11',
+  'vid' => '3',
+  'name' => 'term 7 of vocabulary 3',
+  'description' => '',
+  'weight' => '0',
+  'language' => 'en',
+  'trid' => '2',
+))
+->values(array(
+  'tid' => '12',
+  'vid' => '3',
+  'name' => 'fr - term 7 of vocabulary 3',
+  'description' => '',
+  'weight' => '0',
+  'language' => 'fr',
+  'trid' => '2',
+))
+->values(array(
+  'tid' => '13',
+  'vid' => '3',
+  'name' => 'zu - term 7 of vocabulary 3',
+  'description' => '',
+  'weight' => '0',
+  'language' => 'zu',
+  'trid' => '2',
+))
+->values(array(
+  'tid' => '14',
+  'vid' => '5',
+  'name' => 'Talos IV',
+  'description' => 'The home of Captain Christopher Pike.',
+  'weight' => '0',
+  'language' => '',
+  'trid' => '0',
+))
+->values(array(
+  'tid' => '15',
+  'vid' => '5',
+  'name' => 'Vulcan',
+  'description' => '',
+  'weight' => '0',
+  'language' => '',
+  'trid' => '0',
+))
 ->execute();
 
 $connection->schema()->createTable('term_hierarchy', array(
@@ -47142,6 +47320,34 @@
   'tid' => '8',
   'parent' => '0',
 ))
+->values(array(
+  'tid' => '9',
+  'parent' => '0',
+))
+->values(array(
+  'tid' => '10',
+  'parent' => '0',
+))
+->values(array(
+  'tid' => '11',
+  'parent' => '0',
+))
+->values(array(
+  'tid' => '12',
+  'parent' => '0',
+))
+->values(array(
+  'tid' => '13',
+  'parent' => '0',
+))
+->values(array(
+  'tid' => '14',
+  'parent' => '0',
+))
+->values(array(
+  'tid' => '15',
+  'parent' => '0',
+))
 ->values(array(
   'tid' => '3',
   'parent' => '2',
@@ -48740,7 +48946,7 @@
 ))
 ->values(array(
   'name' => 'i18ntaxonomy_vocabulary',
-  'value' => 'a:3:{i:1;s:1:"3";i:2;s:1:"2";i:3;s:1:"1";}',
+  'value' => 'a:4:{i:1;s:1:"3";i:2;s:1:"2";i:3;s:1:"3";i:5;s:1:"1";}',
 ))
 ->values(array(
   'name' => 'i18n_lock_node_article',
diff --git a/core/modules/migrate_drupal_ui/tests/src/Functional/d6/MigrateUpgrade6Test.php b/core/modules/migrate_drupal_ui/tests/src/Functional/d6/MigrateUpgrade6Test.php
index 54ea5747ad52e8c699c925c2dd7451b1599f73be..b37b45b638a97178c4315d86a450ad005c236be9 100644
--- a/core/modules/migrate_drupal_ui/tests/src/Functional/d6/MigrateUpgrade6Test.php
+++ b/core/modules/migrate_drupal_ui/tests/src/Functional/d6/MigrateUpgrade6Test.php
@@ -84,7 +84,7 @@ protected function getEntityCounts() {
       'shortcut_set' => 1,
       'action' => 23,
       'menu' => 8,
-      'taxonomy_term' => 8,
+      'taxonomy_term' => 15,
       'taxonomy_vocabulary' => 7,
       'tour' => 5,
       'user' => 7,
@@ -112,7 +112,7 @@ protected function getEntityCountsIncremental() {
     $counts['file'] = 8;
     $counts['menu_link_content'] = 11;
     $counts['node'] = 19;
-    $counts['taxonomy_term'] = 9;
+    $counts['taxonomy_term'] = 16;
     $counts['user'] = 8;
     $counts['view'] = 16;
     return $counts;
diff --git a/core/modules/taxonomy/src/Plugin/migrate/source/d6/TermLocalizedTranslation.php b/core/modules/taxonomy/src/Plugin/migrate/source/d6/TermLocalizedTranslation.php
new file mode 100644
index 0000000000000000000000000000000000000000..5348ee23e508ccf2300879afb0ab46cd6e008105
--- /dev/null
+++ b/core/modules/taxonomy/src/Plugin/migrate/source/d6/TermLocalizedTranslation.php
@@ -0,0 +1,100 @@
+<?php
+
+namespace Drupal\taxonomy\Plugin\migrate\source\d6;
+
+use Drupal\migrate\Row;
+
+/**
+ * Gets i18n taxonomy terms from source database.
+ *
+ * @MigrateSource(
+ *   id = "d6_term_localized_translation",
+ *   source_module = "i18ntaxonomy"
+ * )
+ */
+class TermLocalizedTranslation extends Term {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function query() {
+    // Ideally, the query would return rows for each language for each taxonomy
+    // term with the translations for both the name and description or just the
+    // name translation or just the description translation. That query quickly
+    // became complex and would be difficult to maintain.
+    // Therefore, build a query based on i18nstrings table where each row has
+    // the translation for only one property, either name or description. The
+    // method prepareRow() is then used to obtain the translation for the other
+    // property.
+    $query = parent::query();
+    $query->addField('td', 'language', 'td.language');
+
+    // Add in the property, which is either name or description.
+    // Cast td.tid as char for PostgreSQL compatibility.
+    $query->leftJoin('i18n_strings', 'i18n', 'CAST(td.tid AS CHAR(255)) = i18n.objectid');
+    $query->isNotNull('i18n.lid');
+    $query->addField('i18n', 'lid');
+    $query->addField('i18n', 'property');
+
+    // Add in the translation for the property.
+    $query->innerJoin('locales_target', 'lt', 'i18n.lid = lt.lid');
+    $query->addField('lt', 'language', 'lt.language');
+    $query->addField('lt', 'translation');
+    return $query;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function prepareRow(Row $row) {
+    $language = $row->getSourceProperty('ltlanguage');
+    $row->setSourceProperty('language', $language);
+    $tid = $row->getSourceProperty('tid');
+
+    // If this row has been migrated it is a duplicate then skip it.
+    if ($this->idMap->lookupDestinationIds(['tid' => $tid, 'language' => $language])) {
+      return FALSE;
+    }
+
+    // Save the translation for this property.
+    $property = $row->getSourceProperty('property');
+    $row->setSourceProperty($property . '_translated', $row->getSourceProperty('translation'));
+
+    // Get the translation, if one exists, for the property not already in the
+    // row.
+    $other_property = ($property == 'name') ? 'description' : 'name';
+    $query = $this->select('i18n_strings', 'i18n')
+      ->fields('i18n', ['lid'])
+      ->condition('i18n.property', $other_property)
+      ->condition('i18n.objectid', $tid);
+    $query->leftJoin('locales_target', 'lt', 'i18n.lid = lt.lid');
+    $query->condition('lt.language', $language);
+    $query->addField('lt', 'translation');
+    $results = $query->execute()->fetchAssoc();
+    $row->setSourceProperty($other_property . '_translated', $results['translation']);
+
+    parent::prepareRow($row);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function fields() {
+    $fields = [
+      'language' => $this->t('Language for this term.'),
+      'name_translated' => $this->t('Term name translation.'),
+      'description_translated' => $this->t('Term description translation.'),
+    ];
+    return parent::fields() + $fields;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getIds() {
+    $ids['language']['type'] = 'string';
+    $ids['language']['alias'] = 'lt';
+    return parent::getIds() + $ids;
+  }
+
+}
diff --git a/core/modules/taxonomy/tests/src/Kernel/Migrate/d6/MigrateTaxonomyTermTest.php b/core/modules/taxonomy/tests/src/Kernel/Migrate/d6/MigrateTaxonomyTermTest.php
index 75c79241e0c8eeed939f7cc60dcf9cebbb39be58..20ecb6390346241c7f29b610c7b5e4aaf8d8f840 100644
--- a/core/modules/taxonomy/tests/src/Kernel/Migrate/d6/MigrateTaxonomyTermTest.php
+++ b/core/modules/taxonomy/tests/src/Kernel/Migrate/d6/MigrateTaxonomyTermTest.php
@@ -104,7 +104,14 @@ public function testTaxonomyTerms() {
 
       $this->assertArrayHasKey($tid, $tree_terms, "Term $tid exists in vocabulary tree");
       $tree_term = $tree_terms[$tid];
-      $this->assertEquals($values['parent'], $tree_term->parents, "Term $tid has correct parents in vocabulary tree");
+
+      // PostgreSQL, MySQL and SQLite may not return the parent terms in the
+      // same order so sort before testing.
+      $expected_parents = $values['parent'];
+      sort($expected_parents);
+      $actual_parents = $tree_term->parents;
+      sort($actual_parents);
+      $this->assertEquals($expected_parents, $actual_parents, "Term $tid has correct parents in vocabulary tree");
     }
   }
 
diff --git a/core/modules/taxonomy/tests/src/Kernel/Migrate/d6/MigrateTermLocalizedTranslationTest.php b/core/modules/taxonomy/tests/src/Kernel/Migrate/d6/MigrateTermLocalizedTranslationTest.php
new file mode 100644
index 0000000000000000000000000000000000000000..b051ce689f1c6ded0a7a607fc5261525a75ebe83
--- /dev/null
+++ b/core/modules/taxonomy/tests/src/Kernel/Migrate/d6/MigrateTermLocalizedTranslationTest.php
@@ -0,0 +1,142 @@
+<?php
+
+namespace Drupal\Tests\taxonomy\Kernel\Migrate\d6;
+
+use Drupal\Tests\migrate_drupal\Kernel\d6\MigrateDrupal6TestBase;
+use Drupal\taxonomy\Entity\Term;
+use Drupal\taxonomy\TermInterface;
+
+/**
+ * Tests migration of localized translated taxonomy terms.
+ *
+ * @group migrate_drupal_6
+ */
+class MigrateTermLocalizedTranslationTest extends MigrateDrupal6TestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = [
+    'content_translation',
+    'language',
+    'menu_ui',
+    'node',
+    'taxonomy',
+    // Required for translation migrations.
+    'migrate_drupal_multilingual',
+  ];
+
+  /**
+   * The cached taxonomy tree items, keyed by vid and tid.
+   *
+   * @var array
+   */
+  protected $treeData = [];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+    $this->installEntitySchema('taxonomy_term');
+    $this->installConfig(static::$modules);
+    $this->executeMigrations([
+      'language',
+      'd6_node_type',
+      'd6_field',
+      'd6_taxonomy_vocabulary',
+      'd6_field_instance',
+      'd6_taxonomy_term',
+      'd6_taxonomy_term_localized_translation',
+    ]);
+  }
+
+  /**
+   * Validates a migrated term contains the expected values.
+   *
+   * @param int $id
+   *   Entity ID to load and check.
+   * @param string $expected_language
+   *   The language code for this term.
+   * @param string $expected_label
+   *   The label the migrated entity should have.
+   * @param string $expected_vid
+   *   The parent vocabulary the migrated entity should have.
+   * @param string $expected_description
+   *   The description the migrated entity should have.
+   * @param string $expected_format
+   *   The format the migrated entity should have.
+   * @param int $expected_weight
+   *   The weight the migrated entity should have.
+   * @param array $expected_parents
+   *   The parent terms the migrated entity should have.
+   * @param int $expected_field_integer_value
+   *   The value the migrated entity field should have.
+   * @param int $expected_term_reference_tid
+   *   The term reference ID the migrated entity field should have.
+   */
+  protected function assertEntity($id, $expected_language, $expected_label, $expected_vid, $expected_description = '', $expected_format = NULL, $expected_weight = 0, array $expected_parents = [], $expected_field_integer_value = NULL, $expected_term_reference_tid = NULL) {
+    /** @var \Drupal\taxonomy\TermInterface $entity */
+    $entity = Term::load($id);
+    $this->assertInstanceOf(TermInterface::class, $entity);
+    $this->assertSame($expected_language, $entity->language()->getId());
+    $this->assertSame($expected_label, $entity->label());
+    $this->assertSame($expected_vid, $entity->bundle());
+    $this->assertSame($expected_description, $entity->getDescription());
+    $this->assertSame($expected_format, $entity->getFormat());
+    $this->assertSame($expected_weight, $entity->getWeight());
+    $this->assertHierarchy($expected_vid, $id, $expected_parents);
+  }
+
+  /**
+   * Asserts that a term is present in the tree storage, with the right parents.
+   *
+   * @param string $vid
+   *   Vocabulary ID.
+   * @param int $tid
+   *   ID of the term to check.
+   * @param array $parent_ids
+   *   The expected parent term IDs.
+   */
+  protected function assertHierarchy($vid, $tid, array $parent_ids) {
+    if (!isset($this->treeData[$vid])) {
+      $tree = \Drupal::entityTypeManager()->getStorage('taxonomy_term')->loadTree($vid);
+      $this->treeData[$vid] = [];
+      foreach ($tree as $item) {
+        $this->treeData[$vid][$item->tid] = $item;
+      }
+    }
+
+    $this->assertArrayHasKey($tid, $this->treeData[$vid], "Term $tid exists in taxonomy tree");
+    $term = $this->treeData[$vid][$tid];
+    $this->assertEquals($parent_ids, array_filter($term->parents), "Term $tid has correct parents in taxonomy tree");
+  }
+
+  /**
+   * Tests the Drupal 6 i18n localized taxonomy term to Drupal 8 migration.
+   */
+  public function testTranslatedLocalizedTaxonomyTerms() {
+    $this->assertEntity(14, 'en', 'Talos IV', 'vocabulary_name_much_longer_than', 'The home of Captain Christopher Pike.', NULL, '0', []);
+    $this->assertEntity(15, 'en', 'Vulcan', 'vocabulary_name_much_longer_than', NULL, NULL, '0', []);
+
+    /** @var \Drupal\taxonomy\TermInterface $entity */
+    $entity = Term::load(14);
+    $this->assertTrue($entity->hasTranslation('fr'));
+    $translation = $entity->getTranslation('fr');
+    $this->assertSame('fr - Talos IV', $translation->label());
+    $this->assertSame('fr - The home of Captain Christopher Pike.', $translation->getDescription());
+
+    $this->assertTrue($entity->hasTranslation('zu'));
+    $translation = $entity->getTranslation('zu');
+    $this->assertSame('Talos IV', $translation->label());
+    $this->assertSame('zu - The home of Captain Christopher Pike.', $translation->getDescription());
+
+    $entity = Term::load(15);
+    $this->assertFalse($entity->hasTranslation('fr'));
+    $this->assertTrue($entity->hasTranslation('zu'));
+    $translation = $entity->getTranslation('zu');
+    $this->assertSame('zu - Vulcan', $translation->label());
+    $this->assertSame('', $translation->getDescription());
+  }
+
+}
diff --git a/core/modules/taxonomy/tests/src/Kernel/Migrate/d6/MigrateVocabularyFieldInstanceTest.php b/core/modules/taxonomy/tests/src/Kernel/Migrate/d6/MigrateVocabularyFieldInstanceTest.php
index c29e3d1e816f9ce62a0c0b6f619db2fe828acead..46d60a6398e1fc61f1afbac3514975e9b413cae5 100644
--- a/core/modules/taxonomy/tests/src/Kernel/Migrate/d6/MigrateVocabularyFieldInstanceTest.php
+++ b/core/modules/taxonomy/tests/src/Kernel/Migrate/d6/MigrateVocabularyFieldInstanceTest.php
@@ -81,13 +81,13 @@ public function testVocabularyFieldInstance() {
     $field_id = 'node.story.field_vocabulary_3_i_2_';
     $field = FieldConfig::load($field_id);
     $this->assertFalse($field->isRequired(), 'Field is not required');
-    $this->assertFalse($field->isTranslatable());
+    $this->assertTrue($field->isTranslatable());
 
     // Tests that a vocabulary named like a D8 base field will be migrated and
     // prefixed with 'field_' to avoid conflicts.
     $field_type = FieldConfig::load('node.sponsor.field_type');
     $this->assertInstanceOf(FieldConfig::class, $field_type);
-    $this->assertFalse($field->isTranslatable());
+    $this->assertTrue($field->isTranslatable());
   }
 
   /**
diff --git a/core/modules/taxonomy/tests/src/Kernel/Plugin/migrate/source/d6/TermLocalizedTranslationTest.php b/core/modules/taxonomy/tests/src/Kernel/Plugin/migrate/source/d6/TermLocalizedTranslationTest.php
new file mode 100644
index 0000000000000000000000000000000000000000..c2fea26d1040f3315f2de4f2f391208c41622993
--- /dev/null
+++ b/core/modules/taxonomy/tests/src/Kernel/Plugin/migrate/source/d6/TermLocalizedTranslationTest.php
@@ -0,0 +1,179 @@
+<?php
+
+namespace Drupal\Tests\taxonomy\Kernel\Plugin\migrate\source\d6;
+
+use Drupal\Tests\migrate\Kernel\MigrateSqlSourceTestBase;
+
+/**
+ * Tests D6 i18n term localized source plugin.
+ *
+ * @covers \Drupal\taxonomy\Plugin\migrate\source\d6\TermLocalizedTranslation
+ * @group taxonomy
+ */
+class TermLocalizedTranslationTest extends MigrateSqlSourceTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = ['taxonomy', 'migrate_drupal'];
+
+  /**
+   * {@inheritdoc}
+   */
+  public function providerSource() {
+    $tests = [];
+
+    // The source data.
+    $tests[0]['source_data']['term_data'] = [
+      [
+        'tid' => 1,
+        'vid' => 5,
+        'name' => 'name value 1',
+        'description' => 'description value 1',
+        'weight' => 0,
+        'language' => NULL,
+      ],
+      [
+        'tid' => 2,
+        'vid' => 6,
+        'name' => 'name value 2',
+        'description' => 'description value 2',
+        'weight' => 0,
+        'language' => NULL,
+      ],
+      [
+        'tid' => 3,
+        'vid' => 6,
+        'name' => 'name value 3',
+        'description' => 'description value 3',
+        'weight' => 0,
+        'language' => NULL,
+      ],
+      [
+        'tid' => 4,
+        'vid' => 5,
+        'name' => 'name value 4',
+        'description' => 'description value 4',
+        'weight' => 1,
+        'language' => NULL,
+      ],
+    ];
+    $tests[0]['source_data']['term_hierarchy'] = [
+      [
+        'tid' => 1,
+        'parent' => 0,
+      ],
+      [
+        'tid' => 2,
+        'parent' => 0,
+      ],
+      [
+        'tid' => 3,
+        'parent' => 0,
+      ],
+      [
+        'tid' => 4,
+        'parent' => 1,
+      ],
+    ];
+    $tests[0]['source_data']['i18n_strings'] = [
+      [
+        'lid' => 6,
+        'objectid' => 1,
+        'type' => 'term',
+        'property' => 'name',
+        'objectindex' => '1',
+        'format' => 0,
+      ],
+      [
+        'lid' => 7,
+        'objectid' => 1,
+        'type' => 'term',
+        'property' => 'description',
+        'objectindex' => '1',
+        'format' => 0,
+      ],
+      [
+        'lid' => 8,
+        'objectid' => 3,
+        'type' => 'term',
+        'property' => 'name',
+        'objectindex' => '3',
+        'format' => 0,
+      ],
+    ];
+    $tests[0]['source_data']['locales_target'] = [
+      [
+        'lid' => 6,
+        'language' => 'fr',
+        'translation' => 'fr - name value 1 translation',
+        'plid' => 0,
+        'plural' => 0,
+        'i18n_status' => 0,
+      ],
+      [
+        'lid' => 7,
+        'language' => 'fr',
+        'translation' => 'fr - description value 1 translation',
+        'plid' => 0,
+        'plural' => 0,
+        'i18n_status' => 0,
+      ],
+      [
+        'lid' => 8,
+        'language' => 'zu',
+        'translation' => 'zu - description value 2 translation',
+        'plid' => 0,
+        'plural' => 0,
+        'i18n_status' => 0,
+      ],
+    ];
+
+    // The expected results.
+    $tests[0]['expected_data'] = [
+      [
+        'tid' => 1,
+        'vid' => 5,
+        'name' => 'name value 1',
+        'description' => 'description value 1',
+        'weight' => 0,
+        'parent' => [0],
+        'property' => 'name',
+        'language' => 'fr',
+        'name_translated' => 'fr - name value 1 translation',
+        'description_translated' => 'fr - description value 1 translation',
+      ],
+      [
+        'tid' => 1,
+        'vid' => 5,
+        'name' => 'name value 1',
+        'description' => 'description value 1',
+        'weight' => 0,
+        'parent' => [0],
+        'property' => 'description',
+        'language' => 'fr',
+        'name_translated' => 'fr - name value 1 translation',
+        'description_translated' => 'fr - description value 1 translation',
+      ],
+      [
+        'tid' => 3,
+        'vid' => 6,
+        'name' => 'name value 3',
+        'description' => 'description value 3',
+        'weight' => 0,
+        'parent' => [0],
+        'property' => 'name',
+        'language' => 'zu',
+        'name_translated' => 'zu - description value 2 translation',
+        'description_translated' => NULL,
+      ],
+    ];
+
+    $tests[0]['expected_count'] = NULL;
+    // Empty configuration will return terms for all vocabularies.
+    $tests[0]['configuration'] = [];
+
+    return $tests;
+  }
+
+}