diff --git a/CHANGELOG b/CHANGELOG
index 20948a8db5e..398329b9f10 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -5,6 +5,7 @@ v 8.12.0 (unreleased)
   - Only check :can_resolve permission if the note is resolvable
   - Bump fog-aws to v0.11.0 to support ap-south-1 region
   - Add ability to fork to a specific namespace using API. (ritave)
+  - Allow to set request_access_enabled for groups and projects
   - Cleanup misalignments in Issue list view !6206
   - Prune events older than 12 months. (ritave)
   - Prepend blank line to `Closes` message on merge request linked to issue (lukehowell)
diff --git a/doc/api/groups.md b/doc/api/groups.md
index 3e94e1e4efe..e81d6f9de4b 100644
--- a/doc/api/groups.md
+++ b/doc/api/groups.md
@@ -84,7 +84,8 @@ Parameters:
     "forks_count": 0,
     "open_issues_count": 3,
     "public_builds": true,
-    "shared_with_groups": []
+    "shared_with_groups": [],
+    "request_access_enabled": false
   }
 ]
 ```
@@ -118,6 +119,7 @@ Example response:
   "visibility_level": 20,
   "avatar_url": null,
   "web_url": "https://gitlab.example.com/groups/twitter",
+  "request_access_enabled": false,
   "projects": [
     {
       "id": 7,
@@ -163,7 +165,8 @@ Example response:
       "forks_count": 0,
       "open_issues_count": 3,
       "public_builds": true,
-      "shared_with_groups": []
+      "shared_with_groups": [],
+      "request_access_enabled": false
     },
     {
       "id": 6,
@@ -209,7 +212,8 @@ Example response:
       "forks_count": 0,
       "open_issues_count": 8,
       "public_builds": true,
-      "shared_with_groups": []
+      "shared_with_groups": [],
+      "request_access_enabled": false
     }
   ],
   "shared_projects": [
@@ -289,6 +293,7 @@ Parameters:
 - `description` (optional) - The group's description
 - `visibility_level` (optional) - The group's visibility. 0 for private, 10 for internal, 20 for public.
 - `lfs_enabled` (optional)      - Enable/disable Large File Storage (LFS) for the projects in this group
+- `request_access_enabled` (optional) - Allow users to request member access.
 
 ## Transfer project to group
 
@@ -319,6 +324,7 @@ PUT /groups/:id
 | `description` | string | no | The description of the group |
 | `visibility_level` | integer | no | The visibility level of the group. 0 for private, 10 for internal, 20 for public. |
 | `lfs_enabled` (optional) | boolean | no | Enable/disable Large File Storage (LFS) for the projects in this group |
+| `request_access_enabled` | boolean | no | Allow users to request member access. |
 
 ```bash
 curl --request PUT --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v3/groups/5?name=Experimental"
@@ -336,6 +342,7 @@ Example response:
   "visibility_level": 10,
   "avatar_url": null,
   "web_url": "http://gitlab.example.com/groups/h5bp",
+  "request_access_enabled": false,
   "projects": [
     {
       "id": 9,
@@ -380,7 +387,8 @@ Example response:
       "forks_count": 0,
       "open_issues_count": 3,
       "public_builds": true,
-      "shared_with_groups": []
+      "shared_with_groups": [],
+      "request_access_enabled": false
     }
   ]
 }
diff --git a/doc/api/projects.md b/doc/api/projects.md
index fe3c8709d13..750ce1508df 100644
--- a/doc/api/projects.md
+++ b/doc/api/projects.md
@@ -85,7 +85,8 @@ Parameters:
     "runners_token": "b8547b1dc37721d05889db52fa2f02",
     "public_builds": true,
     "shared_with_groups": [],
-    "only_allow_merge_if_build_succeeds": false
+    "only_allow_merge_if_build_succeeds": false,
+    "request_access_enabled": false
   },
   {
     "id": 6,
@@ -146,7 +147,8 @@ Parameters:
     "runners_token": "b8547b1dc37721d05889db52fa2f02",
     "public_builds": true,
     "shared_with_groups": [],
-    "only_allow_merge_if_build_succeeds": false
+    "only_allow_merge_if_build_succeeds": false,
+    "request_access_enabled": false
   }
 ]
 ```
@@ -283,7 +285,8 @@ Parameters:
       "group_access_level": 10
     }
   ],
-  "only_allow_merge_if_build_succeeds": false
+  "only_allow_merge_if_build_succeeds": false,
+  "request_access_enabled": false
 }
 ```
 
@@ -453,6 +456,7 @@ Parameters:
 - `public_builds` (optional)
 - `only_allow_merge_if_build_succeeds` (optional)
 - `lfs_enabled` (optional)
+- `request_access_enabled` (optional) - Allow users to request member access.
 
 ### Create project for user
 
@@ -480,6 +484,7 @@ Parameters:
 - `public_builds` (optional)
 - `only_allow_merge_if_build_succeeds` (optional)
 - `lfs_enabled` (optional)
+- `request_access_enabled` (optional) - Allow users to request member access.
 
 ### Edit project
 
@@ -508,6 +513,7 @@ Parameters:
 - `public_builds` (optional)
 - `only_allow_merge_if_build_succeeds` (optional)
 - `lfs_enabled` (optional)
+- `request_access_enabled` (optional) - Allow users to request member access.
 
 On success, method returns 200 with the updated project. If parameters are
 invalid, 400 is returned.
@@ -588,7 +594,8 @@ Example response:
   "star_count": 1,
   "public_builds": true,
   "shared_with_groups": [],
-  "only_allow_merge_if_build_succeeds": false
+  "only_allow_merge_if_build_succeeds": false,
+  "request_access_enabled": false
 }
 ```
 
@@ -655,7 +662,8 @@ Example response:
   "star_count": 0,
   "public_builds": true,
   "shared_with_groups": [],
-  "only_allow_merge_if_build_succeeds": false
+  "only_allow_merge_if_build_succeeds": false,
+  "request_access_enabled": false
 }
 ```
 
@@ -742,7 +750,8 @@ Example response:
   "runners_token": "b8bc4a7a29eb76ea83cf79e4908c2b",
   "public_builds": true,
   "shared_with_groups": [],
-  "only_allow_merge_if_build_succeeds": false
+  "only_allow_merge_if_build_succeeds": false,
+  "request_access_enabled": false
 }
 ```
 
@@ -829,7 +838,8 @@ Example response:
   "runners_token": "b8bc4a7a29eb76ea83cf79e4908c2b",
   "public_builds": true,
   "shared_with_groups": [],
-  "only_allow_merge_if_build_succeeds": false
+  "only_allow_merge_if_build_succeeds": false,
+  "request_access_enabled": false
 }
 ```
 
diff --git a/lib/api/entities.rb b/lib/api/entities.rb
index bfee4b6c752..0235ba3d580 100644
--- a/lib/api/entities.rb
+++ b/lib/api/entities.rb
@@ -100,6 +100,7 @@ module API
         SharedGroup.represent(project.project_group_links.all, options)
       end
       expose :only_allow_merge_if_build_succeeds
+      expose :request_access_enabled
     end
 
     class Member < UserBasic
@@ -125,6 +126,7 @@ module API
       expose :lfs_enabled?, as: :lfs_enabled
       expose :avatar_url
       expose :web_url
+      expose :request_access_enabled
     end
 
     class GroupDetail < Group
diff --git a/lib/api/groups.rb b/lib/api/groups.rb
index 60ac9bdfa33..953fa474e88 100644
--- a/lib/api/groups.rb
+++ b/lib/api/groups.rb
@@ -23,18 +23,19 @@ module API
       # Create group. Available only for users who can create groups.
       #
       # Parameters:
-      #   name (required)             - The name of the group
-      #   path (required)             - The path of the group
-      #   description (optional)      - The description of the group
-      #   visibility_level (optional) - The visibility level of the group
-      #   lfs_enabled (optional)      - Enable/disable LFS for the projects in this group
+      #   name (required)                   - The name of the group
+      #   path (required)                   - The path of the group
+      #   description (optional)            - The description of the group
+      #   visibility_level (optional)       - The visibility level of the group
+      #   lfs_enabled (optional)            - Enable/disable LFS for the projects in this group
+      #   request_access_enabled (optional) - Allow users to request member access
       # Example Request:
       #   POST /groups
       post do
         authorize! :create_group
         required_attributes! [:name, :path]
 
-        attrs = attributes_for_keys [:name, :path, :description, :visibility_level, :lfs_enabled]
+        attrs = attributes_for_keys [:name, :path, :description, :visibility_level, :lfs_enabled, :request_access_enabled]
         @group = Group.new(attrs)
 
         if @group.save
@@ -48,18 +49,19 @@ module API
       # Update group. Available only for users who can administrate groups.
       #
       # Parameters:
-      #   id (required)               - The ID of a group
-      #   path (optional)             - The path of the group
-      #   description (optional)      - The description of the group
-      #   visibility_level (optional) - The visibility level of the group
-      #   lfs_enabled (optional)      - Enable/disable LFS for the projects in this group
+      #   id (required)                     - The ID of a group
+      #   path (optional)                   - The path of the group
+      #   description (optional)            - The description of the group
+      #   visibility_level (optional)       - The visibility level of the group
+      #   lfs_enabled (optional)            - Enable/disable LFS for the projects in this group
+      #   request_access_enabled (optional) - Allow users to request member access
       # Example Request:
       #   PUT /groups/:id
       put ':id' do
         group = find_group(params[:id])
         authorize! :admin_group, group
 
-        attrs = attributes_for_keys [:name, :path, :description, :visibility_level, :lfs_enabled]
+        attrs = attributes_for_keys [:name, :path, :description, :visibility_level, :lfs_enabled, :request_access_enabled]
 
         if ::Groups::UpdateService.new(group, current_user, attrs).execute
           present group, with: Entities::GroupDetail
diff --git a/lib/api/projects.rb b/lib/api/projects.rb
index 644d836ed0b..5eb83c2c8f8 100644
--- a/lib/api/projects.rb
+++ b/lib/api/projects.rb
@@ -91,8 +91,8 @@ module API
       # Create new project
       #
       # Parameters:
-      #   name (required) - name for new project
-      #   description (optional) - short project description
+      #   name (required)                   - name for new project
+      #   description (optional)            - short project description
       #   issues_enabled (optional)
       #   merge_requests_enabled (optional)
       #   builds_enabled (optional)
@@ -100,33 +100,35 @@ module API
       #   snippets_enabled (optional)
       #   container_registry_enabled (optional)
       #   shared_runners_enabled (optional)
-      #   namespace_id (optional) - defaults to user namespace
-      #   public (optional) - if true same as setting visibility_level = 20
-      #   visibility_level (optional) - 0 by default
+      #   namespace_id (optional)           - defaults to user namespace
+      #   public (optional)                 - if true same as setting visibility_level = 20
+      #   visibility_level (optional)       - 0 by default
       #   import_url (optional)
       #   public_builds (optional)
       #   lfs_enabled (optional)
+      #   request_access_enabled (optional) - Allow users to request member access
       # Example Request
       #   POST /projects
       post do
         required_attributes! [:name]
-        attrs = attributes_for_keys [:name,
-                                     :path,
-                                     :description,
-                                     :issues_enabled,
-                                     :merge_requests_enabled,
-                                     :builds_enabled,
-                                     :wiki_enabled,
-                                     :snippets_enabled,
+        attrs = attributes_for_keys [:builds_enabled,
                                      :container_registry_enabled,
-                                     :shared_runners_enabled,
-                                     :namespace_id,
-                                     :public,
-                                     :visibility_level,
+                                     :description,
                                      :import_url,
-                                     :public_builds,
+                                     :issues_enabled,
+                                     :lfs_enabled,
+                                     :merge_requests_enabled,
+                                     :name,
+                                     :namespace_id,
                                      :only_allow_merge_if_build_succeeds,
-                                     :lfs_enabled]
+                                     :path,
+                                     :public,
+                                     :public_builds,
+                                     :request_access_enabled,
+                                     :shared_runners_enabled,
+                                     :snippets_enabled,
+                                     :visibility_level,
+                                     :wiki_enabled]
         attrs = map_public_to_visibility_level(attrs)
         @project = ::Projects::CreateService.new(current_user, attrs).execute
         if @project.saved?
@@ -143,10 +145,10 @@ module API
       # Create new project for a specified user.  Only available to admin users.
       #
       # Parameters:
-      #   user_id (required) - The ID of a user
-      #   name (required) - name for new project
-      #   description (optional) - short project description
-      #   default_branch (optional) - 'master' by default
+      #   user_id (required)                - The ID of a user
+      #   name (required)                   - name for new project
+      #   description (optional)            - short project description
+      #   default_branch (optional)         - 'master' by default
       #   issues_enabled (optional)
       #   merge_requests_enabled (optional)
       #   builds_enabled (optional)
@@ -154,31 +156,33 @@ module API
       #   snippets_enabled (optional)
       #   container_registry_enabled (optional)
       #   shared_runners_enabled (optional)
-      #   public (optional) - if true same as setting visibility_level = 20
+      #   public (optional)                 - if true same as setting visibility_level = 20
       #   visibility_level (optional)
       #   import_url (optional)
       #   public_builds (optional)
       #   lfs_enabled (optional)
+      #   request_access_enabled (optional) - Allow users to request member access
       # Example Request
       #   POST /projects/user/:user_id
       post "user/:user_id" do
         authenticated_as_admin!
         user = User.find(params[:user_id])
-        attrs = attributes_for_keys [:name,
-                                     :description,
+        attrs = attributes_for_keys [:builds_enabled,
                                      :default_branch,
-                                     :issues_enabled,
-                                     :merge_requests_enabled,
-                                     :builds_enabled,
-                                     :wiki_enabled,
-                                     :snippets_enabled,
-                                     :shared_runners_enabled,
-                                     :public,
-                                     :visibility_level,
+                                     :description,
                                      :import_url,
-                                     :public_builds,
+                                     :issues_enabled,
+                                     :lfs_enabled,
+                                     :merge_requests_enabled,
+                                     :name,
                                      :only_allow_merge_if_build_succeeds,
-                                     :lfs_enabled]
+                                     :public,
+                                     :public_builds,
+                                     :request_access_enabled,
+                                     :shared_runners_enabled,
+                                     :snippets_enabled,
+                                     :visibility_level,
+                                     :wiki_enabled]
         attrs = map_public_to_visibility_level(attrs)
         @project = ::Projects::CreateService.new(user, attrs).execute
         if @project.saved?
@@ -242,22 +246,23 @@ module API
       # Example Request
       #   PUT /projects/:id
       put ':id' do
-        attrs = attributes_for_keys [:name,
-                                     :path,
-                                     :description,
-                                     :default_branch,
-                                     :issues_enabled,
-                                     :merge_requests_enabled,
-                                     :builds_enabled,
-                                     :wiki_enabled,
-                                     :snippets_enabled,
+        attrs = attributes_for_keys [:builds_enabled,
                                      :container_registry_enabled,
-                                     :shared_runners_enabled,
-                                     :public,
-                                     :visibility_level,
-                                     :public_builds,
+                                     :default_branch,
+                                     :description,
+                                     :issues_enabled,
+                                     :lfs_enabled,
+                                     :merge_requests_enabled,
+                                     :name,
                                      :only_allow_merge_if_build_succeeds,
-                                     :lfs_enabled]
+                                     :path,
+                                     :public,
+                                     :public_builds,
+                                     :request_access_enabled,
+                                     :shared_runners_enabled,
+                                     :snippets_enabled,
+                                     :visibility_level,
+                                     :wiki_enabled]
         attrs = map_public_to_visibility_level(attrs)
         authorize_admin_project
         authorize! :rename_project, user_project if attrs[:name].present?
diff --git a/spec/requests/api/groups_spec.rb b/spec/requests/api/groups_spec.rb
index 4860b23c2ed..1f68ef1af8f 100644
--- a/spec/requests/api/groups_spec.rb
+++ b/spec/requests/api/groups_spec.rb
@@ -120,10 +120,11 @@ describe API::API, api: true  do
 
     context 'when authenticated as the group owner' do
       it 'updates the group' do
-        put api("/groups/#{group1.id}", user1), name: new_group_name
+        put api("/groups/#{group1.id}", user1), name: new_group_name, request_access_enabled: true
 
         expect(response).to have_http_status(200)
         expect(json_response['name']).to eq(new_group_name)
+        expect(json_response['request_access_enabled']).to eq(true)
       end
 
       it 'returns 404 for a non existing group' do
@@ -238,8 +239,14 @@ describe API::API, api: true  do
 
     context "when authenticated as user with group permissions" do
       it "creates group" do
-        post api("/groups", user3), attributes_for(:group)
+        group = attributes_for(:group, { request_access_enabled: false })
+
+        post api("/groups", user3), group
         expect(response).to have_http_status(201)
+
+        expect(json_response["name"]).to eq(group[:name])
+        expect(json_response["path"]).to eq(group[:path])
+        expect(json_response["request_access_enabled"]).to eq(group[:request_access_enabled])
       end
 
       it "does not create group, duplicate" do
diff --git a/spec/requests/api/projects_spec.rb b/spec/requests/api/projects_spec.rb
index 28aa56e8644..192c7d14c13 100644
--- a/spec/requests/api/projects_spec.rb
+++ b/spec/requests/api/projects_spec.rb
@@ -225,7 +225,8 @@ describe API::API, api: true  do
         issues_enabled: false,
         merge_requests_enabled: false,
         wiki_enabled: false,
-        only_allow_merge_if_build_succeeds: false
+        only_allow_merge_if_build_succeeds: false,
+        request_access_enabled: true
       })
 
       post api('/projects', user), project
@@ -352,7 +353,8 @@ describe API::API, api: true  do
         description: FFaker::Lorem.sentence,
         issues_enabled: false,
         merge_requests_enabled: false,
-        wiki_enabled: false
+        wiki_enabled: false,
+        request_access_enabled: true
       })
 
       post api("/projects/user/#{user.id}", admin), project
@@ -887,6 +889,15 @@ describe API::API, api: true  do
         expect(json_response['message']['name']).to eq(['has already been taken'])
       end
 
+      it 'updates request_access_enabled' do
+        project_param = { request_access_enabled: false }
+
+        put api("/projects/#{project.id}", user), project_param
+
+        expect(response).to have_http_status(200)
+        expect(json_response['request_access_enabled']).to eq(false)
+      end
+
       it 'updates path & name to existing path & name in different namespace' do
         project_param = { path: project4.path, name: project4.name }
         put api("/projects/#{project3.id}", user), project_param
@@ -948,7 +959,8 @@ describe API::API, api: true  do
                           wiki_enabled: true,
                           snippets_enabled: true,
                           merge_requests_enabled: true,
-                          description: 'new description' }
+                          description: 'new description',
+                          request_access_enabled: true }
         put api("/projects/#{project.id}", user3), project_param
         expect(response).to have_http_status(403)
       end