diff --git a/app/assets/javascripts/issues/list/constants.js b/app/assets/javascripts/issues/list/constants.js
index 2a1b0e4275639efbabc74064a1a83e9c63b18e59..a7779dc878b390bc63e850e84c85c3ab24f66c42 100644
--- a/app/assets/javascripts/issues/list/constants.js
+++ b/app/assets/javascripts/issues/list/constants.js
@@ -12,6 +12,7 @@ import {
   OPERATOR_AFTER,
   OPERATOR_BEFORE,
   TOKEN_TYPE_ASSIGNEE,
+  TOKEN_TYPE_MR_ASSIGNEE,
   TOKEN_TYPE_AUTHOR,
   TOKEN_TYPE_CONFIDENTIAL,
   TOKEN_TYPE_CONTACT,
@@ -214,6 +215,26 @@ export const filtersMap = {
       },
     },
   },
+  [TOKEN_TYPE_MR_ASSIGNEE]: {
+    [API_PARAM]: {
+      [NORMAL_FILTER]: 'assigneeUsername',
+      [SPECIAL_FILTER]: 'assigneeWildcardId',
+      [ALTERNATIVE_FILTER]: 'assigneeId',
+    },
+    [URL_PARAM]: {
+      [OPERATOR_IS]: {
+        [NORMAL_FILTER]: 'mr_assignee_username',
+        [SPECIAL_FILTER]: 'mr_assignee_id',
+        [ALTERNATIVE_FILTER]: 'mr_assignee_username',
+      },
+      [OPERATOR_NOT]: {
+        [NORMAL_FILTER]: 'not[mr_assignee_username]',
+      },
+      [OPERATOR_OR]: {
+        [NORMAL_FILTER]: 'or[mr_assignee_username]',
+      },
+    },
+  },
   [TOKEN_TYPE_ASSIGNEE]: {
     [API_PARAM]: {
       [NORMAL_FILTER]: 'assigneeUsernames',
diff --git a/app/assets/javascripts/merge_requests/list/components/merge_requests_list_app.vue b/app/assets/javascripts/merge_requests/list/components/merge_requests_list_app.vue
index 039c9689e303369cf582c87d1eef2447930a646f..0221c9be83ae39340a0207b7c9284930a4b922e6 100644
--- a/app/assets/javascripts/merge_requests/list/components/merge_requests_list_app.vue
+++ b/app/assets/javascripts/merge_requests/list/components/merge_requests_list_app.vue
@@ -23,6 +23,8 @@ import {
   TOKEN_TYPE_TARGET_BRANCH,
   TOKEN_TITLE_SOURCE_BRANCH,
   TOKEN_TYPE_SOURCE_BRANCH,
+  TOKEN_TITLE_ASSIGNEE,
+  TOKEN_TYPE_MR_ASSIGNEE,
 } from '~/vue_shared/components/filtered_search_bar/constants';
 import {
   convertToApiParams,
@@ -171,6 +173,20 @@ export default {
       }
 
       return [
+        {
+          type: TOKEN_TYPE_MR_ASSIGNEE,
+          title: TOKEN_TITLE_ASSIGNEE,
+          icon: 'user',
+          token: UserToken,
+          dataType: 'user',
+          operators: OPERATORS_IS,
+          fullPath: this.fullPath,
+          isProject: true,
+          recentSuggestionsStorageKey: `${this.fullPath}-merge-requests-recent-tokens-assignee`,
+          preloadedUsers,
+          multiSelect: false,
+          unique: true,
+        },
         {
           type: TOKEN_TYPE_AUTHOR,
           title: TOKEN_TITLE_AUTHOR,
diff --git a/app/assets/javascripts/merge_requests/list/queries/get_merge_requests.query.graphql b/app/assets/javascripts/merge_requests/list/queries/get_merge_requests.query.graphql
index b7811523b0b62490c9a7690b9f9255856d9a0624..bd472856ad157ee54d2a9acf103a4b5126028e3b 100644
--- a/app/assets/javascripts/merge_requests/list/queries/get_merge_requests.query.graphql
+++ b/app/assets/javascripts/merge_requests/list/queries/get_merge_requests.query.graphql
@@ -7,6 +7,7 @@ query getMergeRequests(
   $fullPath: ID!
   $sort: MergeRequestSort
   $state: MergeRequestState
+  $assigneeUsername: String
   $authorUsername: String
   $draft: Boolean
   $sourceBranches: [String!]
@@ -21,6 +22,7 @@ query getMergeRequests(
     mergeRequests(
       sort: $sort
       state: $state
+      assigneeUsername: $assigneeUsername
       authorUsername: $authorUsername
       draft: $draft
       sourceBranches: $sourceBranches
diff --git a/app/assets/javascripts/vue_shared/components/filtered_search_bar/constants.js b/app/assets/javascripts/vue_shared/components/filtered_search_bar/constants.js
index aeebe312e9d08a76be77a41c17100da017014945..32e9c424b8762087e2e4f06996ac9e24b68e6731 100644
--- a/app/assets/javascripts/vue_shared/components/filtered_search_bar/constants.js
+++ b/app/assets/javascripts/vue_shared/components/filtered_search_bar/constants.js
@@ -90,6 +90,7 @@ export const TOKEN_TITLE_CLOSED = __('Closed date');
 export const TOKEN_TYPE_APPROVED_BY = 'approved-by';
 export const TOKEN_TYPE_MERGE_USER = 'merge-user';
 export const TOKEN_TYPE_ASSIGNEE = 'assignee';
+export const TOKEN_TYPE_MR_ASSIGNEE = 'mr-assignee';
 export const TOKEN_TYPE_AUTHOR = 'author';
 export const TOKEN_TYPE_CONFIDENTIAL = 'confidential';
 export const TOKEN_TYPE_CONTACT = 'contact';
diff --git a/spec/frontend/merge_requests/list/components/merge_requests_list_app_spec.js b/spec/frontend/merge_requests/list/components/merge_requests_list_app_spec.js
index 1e1239d4b28be9e293ce9a17d3133a486a88df9b..7fa8c062671de8abb17522fccfe080a484928b4b 100644
--- a/spec/frontend/merge_requests/list/components/merge_requests_list_app_spec.js
+++ b/spec/frontend/merge_requests/list/components/merge_requests_list_app_spec.js
@@ -12,6 +12,7 @@ import {
   TOKEN_TYPE_DRAFT,
   TOKEN_TYPE_SOURCE_BRANCH,
   TOKEN_TYPE_TARGET_BRANCH,
+  TOKEN_TYPE_MR_ASSIGNEE,
 } from '~/vue_shared/components/filtered_search_bar/constants';
 import { mergeRequestListTabs } from '~/vue_shared/issuable/list/constants';
 import { getSortOptions } from '~/issues/list/utils';
@@ -107,6 +108,7 @@ describe('Merge requests list app', () => {
 
       it('does not have preloaded users when gon.current_user_id does not exist', () => {
         expect(findIssuableList().props('searchTokens')).toMatchObject([
+          { type: TOKEN_TYPE_MR_ASSIGNEE },
           { type: TOKEN_TYPE_AUTHOR, preloadedUsers: [] },
           { type: TOKEN_TYPE_DRAFT },
           { type: TOKEN_TYPE_TARGET_BRANCH },
@@ -116,8 +118,18 @@ describe('Merge requests list app', () => {
     });
 
     describe('when all tokens are available', () => {
+      const urlParams = {
+        mr_assignee_username: 'bob',
+        draft: 'yes',
+        'target_branches[]': 'branch-a',
+        'source_branches[]': 'branch-b',
+      };
+      const paramString = Object.entries(urlParams)
+        .map(([k, v]) => `${k}=${v}`)
+        .join('&');
+
       beforeEach(async () => {
-        setWindowLocation('?draft=yes&target_branches[]=branch-a&source_branches[]=branch-b');
+        setWindowLocation(`?${paramString}`);
         window.gon = {
           current_user_id: mockCurrentUser.id,
           current_user_fullname: mockCurrentUser.name,
@@ -141,6 +153,7 @@ describe('Merge requests list app', () => {
         ];
 
         expect(findIssuableList().props('searchTokens')).toMatchObject([
+          { type: TOKEN_TYPE_MR_ASSIGNEE },
           { type: TOKEN_TYPE_AUTHOR, preloadedUsers },
           { type: TOKEN_TYPE_DRAFT },
           { type: TOKEN_TYPE_TARGET_BRANCH },
@@ -150,6 +163,7 @@ describe('Merge requests list app', () => {
 
       it('pre-displays tokens that are in the url search parameters', () => {
         expect(findIssuableList().props('initialFilterValue')).toMatchObject([
+          { type: TOKEN_TYPE_MR_ASSIGNEE },
           { type: TOKEN_TYPE_DRAFT },
           { type: TOKEN_TYPE_TARGET_BRANCH },
           { type: TOKEN_TYPE_SOURCE_BRANCH },