diff --git a/frontend/src/Settings/ImportLists/ImportLists/EditImportListModalContent.tsx b/frontend/src/Settings/ImportLists/ImportLists/EditImportListModalContent.tsx
index 2b06cc2e78..64398debbb 100644
--- a/frontend/src/Settings/ImportLists/ImportLists/EditImportListModalContent.tsx
+++ b/frontend/src/Settings/ImportLists/ImportLists/EditImportListModalContent.tsx
@@ -78,6 +78,7 @@ function EditImportListModalContent({
     qualityProfileId,
     searchOnAdd,
     tags,
+    tagExisting,
     fields,
   } = item;
 
@@ -256,6 +257,18 @@ function EditImportListModalContent({
               />
             </FormGroup>
 
+            <FormGroup>
+              <FormLabel>{translate('TagExisting')}</FormLabel>
+
+              <FormInputGroup
+                type={inputTypes.CHECK}
+                name="tagExisting"
+                helpText={translate('TagExistingHelpText')}
+                {...tagExisting}
+                onChange={handleInputChange}
+              />
+            </FormGroup>
+
             {fields?.length ? (
               <div>
                 {fields.map((field) => {
diff --git a/frontend/src/Settings/ImportLists/ImportLists/Manage/Edit/ManageImportListsEditModalContent.tsx b/frontend/src/Settings/ImportLists/ImportLists/Manage/Edit/ManageImportListsEditModalContent.tsx
index 74b1662207..5c55519a79 100644
--- a/frontend/src/Settings/ImportLists/ImportLists/Manage/Edit/ManageImportListsEditModalContent.tsx
+++ b/frontend/src/Settings/ImportLists/ImportLists/Manage/Edit/ManageImportListsEditModalContent.tsx
@@ -18,6 +18,7 @@ interface SavePayload {
   qualityProfileId?: number;
   minimumAvailability?: string;
   rootFolderPath?: string;
+  tagExisting?: boolean;
 }
 
 interface ManageImportListsEditModalContentProps {
@@ -62,7 +63,7 @@ function ManageImportListsEditModalContent(
   );
   const [minimumAvailability, setMinimumAvailability] = useState(NO_CHANGE);
   const [rootFolderPath, setRootFolderPath] = useState(NO_CHANGE);
-
+  const [tagExisting, setTagExisting] = useState(NO_CHANGE);
   const save = useCallback(() => {
     let hasChanges = false;
     const payload: SavePayload = {};
@@ -91,6 +92,10 @@ function ManageImportListsEditModalContent(
       hasChanges = true;
       payload.rootFolderPath = rootFolderPath;
     }
+    if (tagExisting !== NO_CHANGE) {
+      hasChanges = true;
+      payload.tagExisting = tagExisting === 'enabled';
+    }
 
     if (hasChanges) {
       onSavePress(payload);
@@ -103,6 +108,7 @@ function ManageImportListsEditModalContent(
     qualityProfileId,
     minimumAvailability,
     rootFolderPath,
+    tagExisting,
     onSavePress,
     onModalClose,
   ]);
@@ -124,6 +130,9 @@ function ManageImportListsEditModalContent(
       case 'rootFolderPath':
         setRootFolderPath(value as string);
         break;
+      case 'tagExisting':
+        setTagExisting(value as string);
+        break;
       default:
         console.warn(`EditImportListModalContent Unknown Input: '${name}'`);
     }
@@ -199,6 +208,18 @@ function ManageImportListsEditModalContent(
             onChange={onInputChange}
           />
         </FormGroup>
+
+        <FormGroup>
+          <FormLabel>{translate('TagExisting')}</FormLabel>
+
+          <FormInputGroup
+            type={inputTypes.SELECT}
+            name="tagExisting"
+            value={tagExisting}
+            values={enableOptions}
+            onChange={onInputChange}
+          />
+        </FormGroup>
       </ModalBody>
 
       <ModalFooter className={styles.modalFooter}>
diff --git a/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalContent.tsx b/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalContent.tsx
index b73132eb85..23acb0b4bf 100644
--- a/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalContent.tsx
+++ b/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalContent.tsx
@@ -82,6 +82,12 @@ const COLUMNS = [
     isSortable: true,
     isVisible: true,
   },
+  {
+    name: 'tagExisting',
+    label: () => translate('TagExisting'),
+    isSortable: true,
+    isVisible: true,
+  },
 ];
 
 interface ManageImportListsModalContentProps {
diff --git a/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalRow.css b/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalRow.css
index 7045ed925b..f18c48db21 100644
--- a/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalRow.css
+++ b/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalRow.css
@@ -5,6 +5,7 @@
 .minimumAvailability,
 .qualityProfileId,
 .rootFolderPath,
+.tagExisting,
 .implementation {
   composes: cell from '~Components/Table/Cells/TableRowCell.css';
 
diff --git a/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalRow.css.d.ts b/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalRow.css.d.ts
index c6cb99a370..78ff64f037 100644
--- a/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalRow.css.d.ts
+++ b/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalRow.css.d.ts
@@ -8,6 +8,7 @@ interface CssExports {
   'name': string;
   'qualityProfileId': string;
   'rootFolderPath': string;
+  'tagExisting': string;
   'tags': string;
 }
 export const cssExports: CssExports;
diff --git a/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalRow.tsx b/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalRow.tsx
index 7cc9c272f1..cb25677406 100644
--- a/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalRow.tsx
+++ b/frontend/src/Settings/ImportLists/ImportLists/Manage/ManageImportListsModalRow.tsx
@@ -19,6 +19,7 @@ interface ManageImportListsModalRowProps {
   minimumAvailability: string;
   implementation: string;
   tags: number[];
+  tagExisting: boolean;
   enabled: boolean;
   enableAuto: boolean;
   columns: Column[];
@@ -38,6 +39,7 @@ function ManageImportListsModalRow(props: ManageImportListsModalRowProps) {
     enabled,
     enableAuto,
     tags,
+    tagExisting,
     onSelectedChange,
   } = props;
 
@@ -91,6 +93,10 @@ function ManageImportListsModalRow(props: ManageImportListsModalRowProps) {
       <TableRowCell className={styles.tags}>
         <MovieTagList tags={tags} />
       </TableRowCell>
+
+      <TableRowCell className={styles.tagExisting}>
+        {tagExisting ? translate('Yes') : translate('No')}
+      </TableRowCell>
     </TableRow>
   );
 }
diff --git a/frontend/src/typings/ImportList.ts b/frontend/src/typings/ImportList.ts
index 42d805b065..69672d4d0d 100644
--- a/frontend/src/typings/ImportList.ts
+++ b/frontend/src/typings/ImportList.ts
@@ -15,6 +15,7 @@ interface ImportList extends Provider {
   minRefreshInterval: string;
   name: string;
   tags: number[];
+  tagExisting: boolean;
 }
 
 export default ImportList;
diff --git a/src/NzbDrone.Core/Datastore/Migration/243_add_tag_existing_to_importlists.cs b/src/NzbDrone.Core/Datastore/Migration/243_add_tag_existing_to_importlists.cs
new file mode 100644
index 0000000000..cf26ab3954
--- /dev/null
+++ b/src/NzbDrone.Core/Datastore/Migration/243_add_tag_existing_to_importlists.cs
@@ -0,0 +1,13 @@
+using FluentMigrator;
+using NzbDrone.Core.Datastore.Migration.Framework;
+
+namespace NzbDrone.Core.Datastore.Migration;
+
+[Migration(243)]
+public class add_tag_existing_to_importlists : NzbDroneMigrationBase
+{
+    protected override void MainDbUpgrade()
+    {
+        Alter.Table("ImportLists").AddColumn("TagExisting").AsBoolean().WithDefaultValue(false);
+    }
+}
diff --git a/src/NzbDrone.Core/ImportLists/ImportListDefinition.cs b/src/NzbDrone.Core/ImportLists/ImportListDefinition.cs
index 277f26eb29..268b7d27b1 100644
--- a/src/NzbDrone.Core/ImportLists/ImportListDefinition.cs
+++ b/src/NzbDrone.Core/ImportLists/ImportListDefinition.cs
@@ -16,6 +16,7 @@ public class ImportListDefinition : ProviderDefinition, IEquatable<ImportListDef
         public int QualityProfileId { get; set; }
         public string RootFolderPath { get; set; }
         public bool SearchOnAdd { get; set; }
+        public bool TagExisting { get; set; }
 
         [MemberwiseEqualityIgnore]
         public override bool Enable => Enabled;
diff --git a/src/NzbDrone.Core/ImportLists/ImportListSyncService.cs b/src/NzbDrone.Core/ImportLists/ImportListSyncService.cs
index b96e07a0fb..9d48ff61d2 100644
--- a/src/NzbDrone.Core/ImportLists/ImportListSyncService.cs
+++ b/src/NzbDrone.Core/ImportLists/ImportListSyncService.cs
@@ -76,18 +76,25 @@ private void SyncList(ImportListDefinition definition)
 
         private void ProcessMovieReport(ImportListDefinition importList, ImportListMovie report, List<ImportListExclusion> listExclusions, List<int> dbMovies, List<Movie> moviesToAdd)
         {
-            if (report.TmdbId == 0 || !importList.EnableAuto)
+            if (report.TmdbId == 0)
             {
                 return;
             }
 
-            // Check to see if movie in DB
+            // Check to see if movie in DB and maybe apply tags
             if (dbMovies.Contains(report.TmdbId))
             {
+                TagExisting(importList, report);
                 _logger.Debug("{0} [{1}] Rejected, Movie Exists in DB", report.TmdbId, report.Title);
                 return;
             }
 
+            // Now that retro-tags are applied, end if auto import is disabled
+            if (!importList.EnableAuto)
+            {
+                return;
+            }
+
             // Check to see if movie excluded
             var excludedMovie = listExclusions.SingleOrDefault(s => s.TmdbId == report.TmdbId);
 
@@ -123,6 +130,26 @@ private void ProcessMovieReport(ImportListDefinition importList, ImportListMovie
             }
         }
 
+        private void TagExisting(ImportListDefinition importList, ImportListMovie report)
+        {
+            if (importList.TagExisting)
+            {
+                var movie = _movieService.FindByTmdbId(report.TmdbId);
+
+                var preCount = movie.Tags.Count;
+                foreach (var tag in importList.Tags)
+                {
+                    movie.Tags.Add(tag);
+                }
+
+                if (preCount != movie.Tags.Count)
+                {
+                    _movieService.UpdateMovie(movie);
+                    _logger.Debug("{0} [{1}] Tagged existing movie", report.TmdbId, report.Title);
+                }
+            }
+        }
+
         private void ProcessListItems(ImportListFetchResult listFetchResult)
         {
             listFetchResult.Movies = listFetchResult.Movies.DistinctBy(x =>
diff --git a/src/NzbDrone.Core/Localization/Core/en.json b/src/NzbDrone.Core/Localization/Core/en.json
index 283f20cade..90274ff5cc 100644
--- a/src/NzbDrone.Core/Localization/Core/en.json
+++ b/src/NzbDrone.Core/Localization/Core/en.json
@@ -1697,6 +1697,8 @@
   "Result": "Result",
   "Retention": "Retention",
   "RetentionHelpText": "Usenet only: Set to zero to set for unlimited retention",
+  "TagExistingHelpText": "Tag existing movies in {appName}",
+  "TagExisting": "Tag Existing",
   "RetryingDownloadOn": "Retrying download on {date} at {time}",
   "RootFolder": "Root Folder",
   "RootFolderCheckMultipleMessage": "Multiple root folders are missing: {rootFolderPaths}",
diff --git a/src/Radarr.Api.V3/ImportLists/ImportListBulkResource.cs b/src/Radarr.Api.V3/ImportLists/ImportListBulkResource.cs
index c7633785e9..73e6712c63 100644
--- a/src/Radarr.Api.V3/ImportLists/ImportListBulkResource.cs
+++ b/src/Radarr.Api.V3/ImportLists/ImportListBulkResource.cs
@@ -11,6 +11,7 @@ public class ImportListBulkResource : ProviderBulkResource<ImportListBulkResourc
         public string RootFolderPath { get; set; }
         public int? QualityProfileId { get; set; }
         public MovieStatusType? MinimumAvailability { get; set; }
+        public bool? TagExisting { get; set; }
     }
 
     public class ImportListBulkResourceMapper : ProviderBulkResourceMapper<ImportListBulkResource, ImportListDefinition>
@@ -29,6 +30,7 @@ public override List<ImportListDefinition> UpdateModel(ImportListBulkResource re
                 existing.RootFolderPath = resource.RootFolderPath ?? existing.RootFolderPath;
                 existing.QualityProfileId = resource.QualityProfileId ?? existing.QualityProfileId;
                 existing.MinimumAvailability = resource.MinimumAvailability ?? existing.MinimumAvailability;
+                existing.TagExisting = resource.TagExisting ?? existing.TagExisting;
             });
 
             return existingDefinitions;
diff --git a/src/Radarr.Api.V3/ImportLists/ImportListResource.cs b/src/Radarr.Api.V3/ImportLists/ImportListResource.cs
index 7093f08eaf..27eabb0d89 100644
--- a/src/Radarr.Api.V3/ImportLists/ImportListResource.cs
+++ b/src/Radarr.Api.V3/ImportLists/ImportListResource.cs
@@ -16,6 +16,7 @@ public class ImportListResource : ProviderResource<ImportListResource>
         public ImportListType ListType { get; set; }
         public int ListOrder { get; set; }
         public TimeSpan MinRefreshInterval { get; set; }
+        public bool TagExisting { get; set; }
     }
 
     public class ImportListResourceMapper : ProviderResourceMapper<ImportListResource, ImportListDefinition>
@@ -39,6 +40,7 @@ public override ImportListResource ToResource(ImportListDefinition definition)
             resource.ListType = definition.ListType;
             resource.ListOrder = (int)definition.ListType;
             resource.MinRefreshInterval = definition.MinRefreshInterval;
+            resource.TagExisting = definition.TagExisting;
 
             return resource;
         }
@@ -61,6 +63,7 @@ public override ImportListDefinition ToModel(ImportListResource resource, Import
             definition.MinimumAvailability = resource.MinimumAvailability;
             definition.ListType = resource.ListType;
             definition.MinRefreshInterval = resource.MinRefreshInterval;
+            definition.TagExisting = resource.TagExisting;
 
             return definition;
         }
diff --git a/src/Radarr.Api.V3/ProviderResource.cs b/src/Radarr.Api.V3/ProviderResource.cs
index c5e8a1cd6f..2af43b9f38 100644
--- a/src/Radarr.Api.V3/ProviderResource.cs
+++ b/src/Radarr.Api.V3/ProviderResource.cs
@@ -16,7 +16,6 @@ public class ProviderResource<T> : RestResource
         public string InfoLink { get; set; }
         public ProviderMessage Message { get; set; }
         public HashSet<int> Tags { get; set; }
-
         public List<T> Presets { get; set; }
     }