diff --git a/app/controllers/projects/variables_controller.rb b/app/controllers/projects/variables_controller.rb
index f916c545fab..8bee1b97d14 100644
--- a/app/controllers/projects/variables_controller.rb
+++ b/app/controllers/projects/variables_controller.rb
@@ -1,37 +1,6 @@
 class Projects::VariablesController < Projects::ApplicationController
-  before_action :variable, only: [:show, :update, :destroy]
   before_action :authorize_admin_build!
 
-  layout 'project_settings'
-
-  def index
-    redirect_to project_settings_ci_cd_path(@project)
-  end
-
-  def show
-  end
-
-  def update
-    if variable.update(variable_params)
-      redirect_to project_variables_path(project),
-                  notice: 'Variable was successfully updated.'
-    else
-      render "show"
-    end
-  end
-
-  def create
-    @variable = project.variables.create(variable_params)
-      .present(current_user: current_user)
-
-    if @variable.persisted?
-      redirect_to project_settings_ci_cd_path(project),
-                  notice: 'Variable was successfully created.'
-    else
-      render "show"
-    end
-  end
-
   def save_multiple
     respond_to do |format|
       format.json do
@@ -42,24 +11,8 @@ class Projects::VariablesController < Projects::ApplicationController
     end
   end
 
-  def destroy
-    if variable.destroy
-      redirect_to project_settings_ci_cd_path(project),
-                  status: 302,
-                  notice: 'Variable was successfully removed.'
-    else
-      redirect_to project_settings_ci_cd_path(project),
-                  status: 302,
-                  notice: 'Failed to remove the variable.'
-    end
-  end
-
   private
 
-  def variable_params
-    params.require(:variable).permit(*variable_params_attributes)
-  end
-
   def variables_params
     params.permit(variables_attributes: [*variable_params_attributes])
   end
@@ -67,8 +20,4 @@ class Projects::VariablesController < Projects::ApplicationController
   def variable_params_attributes
     %i[id key value protected _destroy]
   end
-
-  def variable
-    @variable ||= project.variables.find(params[:id]).present(current_user: current_user)
-  end
 end
diff --git a/config/routes/project.rb b/config/routes/project.rb
index 8b65240ade4..b8d09f01ae1 100644
--- a/config/routes/project.rb
+++ b/config/routes/project.rb
@@ -156,10 +156,8 @@ constraints(ProjectUrlConstrainer.new) do
         end
       end
 
-      resources :variables, only: [:index, :show, :update, :create, :destroy] do
-        collection do
-          post :save_multiple
-        end
+      namespace :variables do
+        post :save_multiple
       end
 
       resources :triggers, only: [:index, :create, :edit, :update, :destroy] do
diff --git a/spec/controllers/projects/variables_controller_spec.rb b/spec/controllers/projects/variables_controller_spec.rb
index 946110c0e64..4cbc2fb443a 100644
--- a/spec/controllers/projects/variables_controller_spec.rb
+++ b/spec/controllers/projects/variables_controller_spec.rb
@@ -9,53 +9,6 @@ describe Projects::VariablesController do
     project.add_master(user)
   end
 
-  describe 'POST #create' do
-    context 'variable is valid' do
-      it 'shows a success flash message' do
-        post :create, namespace_id: project.namespace.to_param, project_id: project,
-                      variable: { key: "one", value: "two" }
-
-        expect(flash[:notice]).to include 'Variable was successfully created.'
-        expect(response).to redirect_to(project_settings_ci_cd_path(project))
-      end
-    end
-
-    context 'variable is invalid' do
-      it 'renders show' do
-        post :create, namespace_id: project.namespace.to_param, project_id: project,
-                      variable: { key: "..one", value: "two" }
-
-        expect(response).to render_template("projects/variables/show")
-      end
-    end
-  end
-
-  describe 'POST #update' do
-    let(:variable) { create(:ci_variable) }
-
-    context 'updating a variable with valid characters' do
-      before do
-        project.variables << variable
-      end
-
-      it 'shows a success flash message' do
-        post :update, namespace_id: project.namespace.to_param, project_id: project,
-                      id: variable.id, variable: { key: variable.key, value: 'two' }
-
-        expect(flash[:notice]).to include 'Variable was successfully updated.'
-        expect(response).to redirect_to(project_variables_path(project))
-      end
-
-      it 'renders the action #show if the variable key is invalid' do
-        post :update, namespace_id: project.namespace.to_param, project_id: project,
-                      id: variable.id, variable: { key: '?', value: variable.value }
-
-        expect(response).to have_gitlab_http_status(200)
-        expect(response).to render_template :show
-      end
-    end
-  end
-
   describe 'POST #save_multiple' do
     let(:variable) { create(:ci_variable) }