diff --git a/doc/api/projects.md b/doc/api/projects.md
index e029522be18ace7bfb3dd9d52b2a22bfae7899c2..85b88d40fe855a6778f406c1b47613fe4c03cbfd 100644
--- a/doc/api/projects.md
+++ b/doc/api/projects.md
@@ -106,6 +106,21 @@ Parameters:
 Will return created project with status `201 Created` on success, or `404 Not
 found` on fail.
 
+## Add project users
+
+Add users to exiting project
+
+```
+PUT /projects/:id/add_users
+```
+
+Parameters:
+
++ `id` (required) - The ID or code name of a project
++ `user_ids` (required) - new project name
++ `project_access` (required) - new project name
+
+Will return updated project with status `200 OK` on success, or `404 Not found` on fail.
 
 ## Project repository branches
 
diff --git a/lib/api/projects.rb b/lib/api/projects.rb
index 3d4fde9270f7347a21bf269f389e7547300dfa78..46e688e47f057b687b101a1ada851b38f76dc752 100644
--- a/lib/api/projects.rb
+++ b/lib/api/projects.rb
@@ -44,6 +44,18 @@ module Gitlab
         end
       end
 
+      # Add users to project with specified access level
+      #
+      # Parameters:
+      #   id (required) - The ID or code name of a project
+      #   user_ids (required) - The ID list of users to add
+      #   project_access (required) - Project access level
+      # Example Request:
+      #   PUT /projects/:id/add_users
+      put ":id/add_users" do
+        user_project.add_users_ids_to_team(params[:user_ids], params[:project_access])
+      end
+
       # Get a project repository branches
       #
       # Parameters:
diff --git a/spec/requests/api/projects_spec.rb b/spec/requests/api/projects_spec.rb
index cc6843ccb661f6b046838bf617accb2618f8f61b..f84346543170d288e7cc80495126f9dcf7399cc4 100644
--- a/spec/requests/api/projects_spec.rb
+++ b/spec/requests/api/projects_spec.rb
@@ -62,6 +62,18 @@ describe Gitlab::API do
     end
   end
 
+  describe "PUT /projects/:id/add_users" do
+    @user2 = Factory :user
+    @user3 = Factory :user
+
+    it "should add users to existing project" do
+      expect {
+        put api("/projects/#{project.code}/add_users", user),
+          user_ids: [@user2.id, @user3.id], project_access: UsersProject::DEVELOPER
+      }.to change {Project.users_projects.where(:project_access => UsersProject::DEVELOPER).count}.by(2)
+    end
+  end
+
   describe "GET /projects/:id" do
     it "should return a project by id" do
       get api("/projects/#{project.id}", user)