diff --git a/doc/api/commits.md b/doc/api/commits.md
index 6aa2357793ff4a079f5faad84aebf3a6fffde51e..6a8120244c63addaa690c89bda073bbe219a3441 100644
--- a/doc/api/commits.md
+++ b/doc/api/commits.md
@@ -876,14 +876,15 @@ Returns information about the merge request that originally introduced a specifi
 GET /projects/:id/repository/commits/:sha/merge_requests
 ```
 
-| Attribute | Type | Required | Description |
-| --------- | ---- | -------- | ----------- |
-| `id`      | integer/string | yes | The ID or [URL-encoded path of the project](rest/_index.md#namespaced-paths) |
-| `sha`     | string  | yes   | The commit SHA |
+| Attribute | Type           | Required | Description |
+|-----------|----------------|----------|-------------|
+| `id`      | integer/string | Yes      | The ID or [URL-encoded path of the project](rest/_index.md#namespaced-paths) |
+| `sha`     | string         | Yes      | The commit SHA |
+| `state`   | string         | No       | Returns merge requests with the specified state: `opened`, `closed`, `locked`, or `merged`. Omit this parameter to get all merge requests regardless of state. |
 
 ```shell
 curl --header "PRIVATE-TOKEN: <your_access_token>" \
-  --url "https://gitlab.example.com/api/v4/projects/5/repository/commits/af5b13261899fb2c0db30abdd0af8b07cb44fdc5/merge_requests"
+  --url "https://gitlab.example.com/api/v4/projects/5/repository/commits/af5b13261899fb2c0db30abdd0af8b07cb44fdc5/merge_requests?state=opened"
 ```
 
 Example response:
diff --git a/doc/api/openapi/openapi_v2.yaml b/doc/api/openapi/openapi_v2.yaml
index 320b48de45d94c38a4b7f91ae8e2667f8a1bf0e8..4233ca85a220b9c3480b45098767cd370ed7ade6 100644
--- a/doc/api/openapi/openapi_v2.yaml
+++ b/doc/api/openapi/openapi_v2.yaml
@@ -13523,6 +13523,12 @@ paths:
           Merge Requests
         type: string
         required: true
+      - in: query
+        name: state
+        description: Filter merge-requests by state
+        type: string
+        required: false
+        example: merged
       - in: query
         name: page
         description: Current page number
diff --git a/lib/api/commits.rb b/lib/api/commits.rb
index 478acfddfeed24d08a88c2e554dd71790259fcb7..0a87c074d23fb5acc354f459ef9e7080ae5ae70b 100644
--- a/lib/api/commits.rb
+++ b/lib/api/commits.rb
@@ -551,6 +551,7 @@ def track_commit_events
       end
       params do
         requires :sha, type: String, desc: 'A commit sha, or the name of a branch or tag on which to find Merge Requests'
+        optional :state, type: String, desc: 'Filter merge-requests by state', documentation: { example: 'merged' }
         use :pagination
       end
       get ':id/repository/commits/:sha/merge_requests', requirements: API::COMMIT_ENDPOINT_REQUIREMENTS, urgency: :low do
@@ -562,7 +563,8 @@ def track_commit_events
         commit_merge_requests = MergeRequestsFinder.new(
           current_user,
           project_id: user_project.id,
-          commit_sha: commit.sha
+          commit_sha: commit.sha,
+          state: params[:state]
         ).execute.with_api_entity_associations
 
         present paginate(commit_merge_requests), with: Entities::MergeRequestBasic
diff --git a/spec/requests/api/commits_spec.rb b/spec/requests/api/commits_spec.rb
index 7e7033e4e5f30ed878e76ad48a9bbba6e971b8a4..b38390ff0c105e599c70842b2280376f382db8ee 100644
--- a/spec/requests/api/commits_spec.rb
+++ b/spec/requests/api/commits_spec.rb
@@ -2546,6 +2546,25 @@ def perform_request(user)
 
       expect { perform_request(user) }.not_to exceed_query_limit(control)
     end
+
+    context 'merge-requests filtered by state' do
+      it 'returns the correct opened merge-request' do
+        get api("/projects/#{project.id}/repository/commits/#{commit.id}/merge_requests?state=opened", user)
+
+        expect(response).to have_gitlab_http_status(:ok)
+        expect(response).to include_limited_pagination_headers
+        expect(json_response.length).to eq(1)
+        expect(json_response[0]['id']).to eq(merged_mr.id)
+      end
+
+      it 'does not found closed merge-request' do
+        get api("/projects/#{project.id}/repository/commits/#{commit.id}/merge_requests?state=closed", user)
+
+        expect(response).to have_gitlab_http_status(:ok)
+        expect(response).to include_limited_pagination_headers
+        expect(json_response.length).to eq(0)
+      end
+    end
   end
 
   describe 'GET /projects/:id/repository/commits/:sha/signature' do