diff --git a/app/models/users_project.rb b/app/models/users_project.rb
index 1b598483..3b951f0d 100644
--- a/app/models/users_project.rb
+++ b/app/models/users_project.rb
@@ -20,6 +20,23 @@ class UsersProject < ActiveRecord::Base
 
   delegate :name, :email, to: :user, prefix: true
 
+  def self.bulk_delete(project, user_ids)
+    UsersProject.transaction do
+      UsersProject.where(:user_id => user_ids, :project_id => project.id).each do |users_project|
+        users_project.delete
+      end
+    end
+  end
+
+  def self.bulk_update(project, user_ids, project_access)
+    UsersProject.transaction do
+      UsersProject.where(:user_id => user_ids, :project_id => project.id).each do |users_project|
+        users_project.project_access = project_access
+        users_project.save
+      end
+    end
+  end
+
   def self.bulk_import(project, user_ids, project_access)
     UsersProject.transaction do
       user_ids.each do |user_id|
diff --git a/app/roles/team.rb b/app/roles/team.rb
index 27b1cc65..8aef405a 100644
--- a/app/roles/team.rb
+++ b/app/roles/team.rb
@@ -36,4 +36,17 @@ module Team
     UsersProject.bulk_import(self, users_ids, access_role)
     self.update_repository
   end
+
+  # Update multiple project users
+  # to same access role by user ids
+  def update_users_ids_to_role(users_ids, access_role)
+    UsersProject.bulk_update(self, users_ids, access_role)
+    self.update_repository
+  end
+
+  # Delete multiple users from project by user ids
+  def delete_users_ids_from_team(users_ids)
+    UsersProject.bulk_delete(self, users_ids)
+    self.update_repository
+  end
 end
diff --git a/doc/api/projects.md b/doc/api/projects.md
index 5a20719f..72874e59 100644
--- a/doc/api/projects.md
+++ b/doc/api/projects.md
@@ -112,6 +112,66 @@ Parameters:
 Will return created project with status `201 Created` on success, or `404 Not
 found` on fail.
 
+## Get project users
+
+Get users and access roles for existing project
+
+```
+GET /projects/:id/users
+```
+
+Parameters:
+
++ `id` (required) - The ID or code name of a project
+
+Will return users and their access roles with status `200 OK` on success, or `404 Not found` on fail.
+
+## Add project users
+
+Add users to exiting project
+
+```
+POST /projects/:id/users
+```
+
+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
+
+Will return status `201 Created` on success, or `404 Not found` on fail.
+
+## Update project users access level
+
+Update existing users to specified access level
+
+```
+PUT /projects/:id/users
+```
+
+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
+
+Will return status `200 OK` on success, or `404 Not found` on fail.
+
+## Delete project users
+
+Delete users from exiting project
+
+```
+DELETE /projects/:id/users
+```
+
+Parameters:
+
++ `id` (required) - The ID or code name of a project
++ `user_ids` (required) - The ID list of users to add
+
+Will return status `200 OK` on success, or `404 Not found` on fail.
 
 ## Project repository branches
 
diff --git a/lib/api/entities.rb b/lib/api/entities.rb
index 96ccd87a..fef5328d 100644
--- a/lib/api/entities.rb
+++ b/lib/api/entities.rb
@@ -16,6 +16,11 @@ module Gitlab
       expose :issues_enabled, :merge_requests_enabled, :wall_enabled, :wiki_enabled, :created_at
     end
 
+    class UsersProject < Grape::Entity
+      expose :user, using: Entities::UserBasic
+      expose :project_access
+    end
+
     class RepoObject < Grape::Entity
       expose :name, :commit
     end
diff --git a/lib/api/projects.rb b/lib/api/projects.rb
index d45d1d82..7da83429 100644
--- a/lib/api/projects.rb
+++ b/lib/api/projects.rb
@@ -54,6 +54,55 @@ module Gitlab
         end
       end
 
+      # Get project users
+      #
+      # Parameters:
+      #   id (required) - The ID or code name of a project
+      # Example Request:
+      #   GET /projects/:id/users
+      get ":id/users" do
+        @users_projects = paginate user_project.users_projects
+        present @users_projects, with: Entities::UsersProject
+      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:
+      #   POST /projects/:id/users
+      post ":id/users" do
+        user_project.add_users_ids_to_team(params[:user_ids].values, params[:project_access])
+        nil
+      end
+
+      # Update users to 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) - New project access level to
+      # Example Request:
+      #   PUT /projects/:id/add_users
+      put ":id/users" do
+        user_project.update_users_ids_to_role(params[:user_ids].values, params[:project_access])
+        nil
+      end
+
+      # Delete project users
+      #
+      # Parameters:
+      #   id (required) - The ID or code name of a project
+      #   user_ids (required) - The ID list of users to delete
+      # Example Request:
+      #   DELETE /projects/:id/users
+      delete ":id/users" do
+        user_project.delete_users_ids_from_team(params[:user_ids].values)
+        nil
+      end
+
       # Get a project repository branches
       #
       # Parameters:
diff --git a/spec/requests/api/projects_spec.rb b/spec/requests/api/projects_spec.rb
index 1373748f..439aecce 100644
--- a/spec/requests/api/projects_spec.rb
+++ b/spec/requests/api/projects_spec.rb
@@ -4,8 +4,12 @@ describe Gitlab::API do
   include ApiHelpers
 
   let(:user) { Factory :user }
+  let(:user2) { Factory.create(:user) }
+  let(:user3) { Factory.create(:user) }
   let!(:project) { Factory :project, owner: user }
   let!(:snippet) { Factory :snippet, author: user, project: project, title: 'example' }
+  let!(:users_project) { Factory :users_project, user: user, project: project, project_access: UsersProject::MASTER  }
+  let!(:users_project2) { Factory :users_project, user: user3, project: project, project_access: UsersProject::DEVELOPER  }
   before { project.add_access(user, :read) }
 
   describe "GET /projects" do
@@ -104,6 +108,45 @@ describe Gitlab::API do
     end
   end
 
+  describe "GET /projects/:id/users" do
+    it "should return project users" do
+      get api("/projects/#{project.code}/users", user)
+
+      response.status.should == 200
+
+      json_response.should be_an Array
+      json_response.count.should == 2
+      json_response.first['user']['id'].should == user.id
+    end
+  end
+
+  describe "POST /projects/:id/users" do
+    it "should add users to project" do
+      expect {
+        post api("/projects/#{project.code}/users", user),
+          user_ids: {"0" => user2.id}, project_access: UsersProject::DEVELOPER
+      }.to change {project.users_projects.where(:project_access => UsersProject::DEVELOPER).count}.by(1)
+    end
+  end
+
+  describe "PUT /projects/:id/users" do
+    it "should update users to new access role" do
+      expect {
+        put api("/projects/#{project.code}/users", user),
+          user_ids: {"0" => user3.id}, project_access: UsersProject::MASTER
+      }.to change {project.users_projects.where(:project_access => UsersProject::MASTER).count}.by(1)
+    end
+  end
+
+  describe "DELETE /projects/:id/users" do
+    it "should delete users from project" do
+      expect {
+        delete api("/projects/#{project.code}/users", user),
+          user_ids: {"0" => user3.id}
+      }.to change {project.users_projects.count}.by(-1)
+    end
+  end
+
   describe "GET /projects/:id/repository/tags" do
     it "should return an array of project tags" do
       get api("/projects/#{project.code}/repository/tags", user)