diff --git a/CHANGELOG b/CHANGELOG
index 544e66a1a1c..17bc3d3bf45 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -10,6 +10,7 @@ v 7.4.0
   - Do not delete tmp/repositories itself during clean-up, only its contents
   - Support for backup uploads to remote storage
   - Prevent notes polling when there are not notes
+  - API: Add support for forking a project via the API (Bernhard Kaindl)
   - API: filter project issues by milestone (Julien Bianchi)
 
 v 7.3.1
diff --git a/doc/api/projects.md b/doc/api/projects.md
index 9f6f6741093..8385e11b805 100644
--- a/doc/api/projects.md
+++ b/doc/api/projects.md
@@ -281,6 +281,18 @@ Parameters:
 - `visibility_level` (optional)
 - `import_url` (optional)
 
+### Fork project
+
+Forks a project into the user namespace of the authenticated user.
+
+```
+POST /projects/fork/:id
+```
+
+Parameters:
+
+- `id` (required) - The ID of the project to be forked
+
 ### Remove project
 
 Removes a project including all associated resources (issues, merge requests etc.)
diff --git a/lib/api/projects.rb b/lib/api/projects.rb
index f555819df1b..7f7d2f8e9a8 100644
--- a/lib/api/projects.rb
+++ b/lib/api/projects.rb
@@ -153,6 +153,23 @@ module API
         end
       end
 
+      # Fork new project for the current user.
+      #
+      # Parameters:
+      #   id (required) - The ID of a project
+      # Example Request
+      #   POST /projects/fork/:id
+      post 'fork/:id' do
+        @forked_project =
+          ::Projects::ForkService.new(user_project,
+                                      current_user).execute
+        if @forked_project.errors.any?
+          conflict!(@forked_project.errors.messages)
+        else
+          present @forked_project, with: Entities::Project
+        end
+      end
+
       # Remove project
       #
       # Parameters:
diff --git a/spec/requests/api/fork_spec.rb b/spec/requests/api/fork_spec.rb
new file mode 100644
index 00000000000..cbbd1e7de5a
--- /dev/null
+++ b/spec/requests/api/fork_spec.rb
@@ -0,0 +1,73 @@
+require 'spec_helper'
+
+describe API::API, api: true  do
+  include ApiHelpers
+  let(:user)  { create(:user) }
+  let(:user2) { create(:user) }
+  let(:user3) { create(:user) }
+  let(:admin) { create(:admin) }
+  let(:project)       {
+    create(:project,        creator_id:   user.id,
+                            namespace:    user.namespace)
+  }
+  let(:project_user2) {
+    create(:project_member, user:         user2,
+                            project:      project,
+                            access_level: ProjectMember::GUEST)
+  }
+
+  describe 'POST /projects/fork/:id' do
+    before { project_user2 }
+    before { user3 }
+
+    context 'when authenticated' do
+      it 'should fork if user has sufficient access to project' do
+        post api("/projects/fork/#{project.id}", user2)
+        response.status.should == 201
+        json_response['name'].should == project.name
+        json_response['path'].should == project.path
+        json_response['owner']['id'].should == user2.id
+        json_response['namespace']['id'].should == user2.namespace.id
+        json_response['forked_from_project']['id'].should == project.id
+      end
+
+      it 'should fork if user is admin' do
+        post api("/projects/fork/#{project.id}", admin)
+        response.status.should == 201
+        json_response['name'].should == project.name
+        json_response['path'].should == project.path
+        json_response['owner']['id'].should == admin.id
+        json_response['namespace']['id'].should == admin.namespace.id
+        json_response['forked_from_project']['id'].should == project.id
+      end
+
+      it 'should fail on missing project access for the project to fork' do
+        post api("/projects/fork/#{project.id}", user3)
+        response.status.should == 404
+        json_response['message'].should == '404 Not Found'
+      end
+
+      it 'should fail if forked project exists in the user namespace' do
+        post api("/projects/fork/#{project.id}", user)
+        response.status.should == 409
+        json_response['message']['base'].should == ['Invalid fork destination']
+        json_response['message']['name'].should == ['has already been taken']
+        json_response['message']['path'].should == ['has already been taken']
+      end
+
+      it 'should fail if project to fork from does not exist' do
+        post api('/projects/fork/424242', user)
+        response.status.should == 404
+        json_response['message'].should == '404 Not Found'
+      end
+    end
+
+    context 'when unauthenticated' do
+      it 'should return authentication error' do
+        post api("/projects/fork/#{project.id}")
+        response.status.should == 401
+        json_response['message'].should == '401 Unauthorized'
+      end
+    end
+  end
+end