diff --git a/pkg/api/resolver_mutation_tag.go b/pkg/api/resolver_mutation_tag.go
index 23fefaa88..6b9cc14d2 100644
--- a/pkg/api/resolver_mutation_tag.go
+++ b/pkg/api/resolver_mutation_tag.go
@@ -347,5 +347,6 @@ func (r *mutationResolver) TagsMerge(ctx context.Context, input models.TagsMerge
 		return nil, err
 	}
 
+	r.hookExecutor.ExecutePostHooks(ctx, t.ID, plugin.TagMergePost, input, nil)
 	return t, nil
 }
diff --git a/pkg/plugin/hooks.go b/pkg/plugin/hooks.go
index 9ff83f06f..6267c994f 100644
--- a/pkg/plugin/hooks.go
+++ b/pkg/plugin/hooks.go
@@ -40,6 +40,7 @@ const (
 
 	TagCreatePost  HookTriggerEnum = "Tag.Create.Post"
 	TagUpdatePost  HookTriggerEnum = "Tag.Update.Post"
+	TagMergePost   HookTriggerEnum = "Tag.Merge.Post"
 	TagDestroyPost HookTriggerEnum = "Tag.Destroy.Post"
 )
 
@@ -74,6 +75,7 @@ var AllHookTriggerEnum = []HookTriggerEnum{
 
 	TagCreatePost,
 	TagUpdatePost,
+	TagMergePost,
 	TagDestroyPost,
 }
 
diff --git a/ui/v2.5/src/components/Changelog/versions/v0120.md b/ui/v2.5/src/components/Changelog/versions/v0120.md
index aa248ac68..39f0f314d 100644
--- a/ui/v2.5/src/components/Changelog/versions/v0120.md
+++ b/ui/v2.5/src/components/Changelog/versions/v0120.md
@@ -1,2 +1,5 @@
+### 🎨 Improvements
+* Added plugin hook for Tag merge operation. ([#2010](https://github.com/stashapp/stash/pull/2010))
+
 ### 🐛 Bug fixes
 * Fix "Custom Performer Images" feature picking up non-image files. ([#2017](https://github.com/stashapp/stash/pull/2017))
diff --git a/ui/v2.5/src/docs/en/Plugins.md b/ui/v2.5/src/docs/en/Plugins.md
index 223b10a70..fbb224fcb 100644
--- a/ui/v2.5/src/docs/en/Plugins.md
+++ b/ui/v2.5/src/docs/en/Plugins.md
@@ -125,6 +125,7 @@ The following operations are supported:
 * `Create`
 * `Update`
 * `Destroy`
+* `Merge` (for `Tag` only)
 
 Currently, only `Post` hook types are supported. These are executed after the operation has completed and the transaction is committed.