diff --git a/app/assets/javascripts/discourse/controllers/topic_bulk_actions_controller.js b/app/assets/javascripts/discourse/controllers/topic_bulk_actions_controller.js
index d0176b28c..1b90f5831 100644
--- a/app/assets/javascripts/discourse/controllers/topic_bulk_actions_controller.js
+++ b/app/assets/javascripts/discourse/controllers/topic_bulk_actions_controller.js
@@ -9,7 +9,7 @@
 **/
 Discourse.TopicBulkActionsController = Ember.ArrayController.extend(Discourse.ModalFunctionality, {
   onShow: function() {
-    this.set('controllers.modal.modalClass', 'topic-bulk-actions-modal');
+    this.set('controllers.modal.modalClass', 'topic-bulk-actions-modal small');
   },
 
   perform: function(operation) {
@@ -30,9 +30,26 @@ Discourse.TopicBulkActionsController = Ember.ArrayController.extend(Discourse.Mo
     });
   },
 
+  forEachPerformed: function(operation, cb) {
+    var self = this;
+    this.perform(operation).then(function (topics) {
+      if (topics) {
+        topics.forEach(cb);
+        self.send('closeModal');
+      }
+    });
+  },
+
   actions: {
     showChangeCategory: function() {
       this.send('changeBulkTemplate', 'modal/bulk_change_category');
+      this.set('controllers.modal.modalClass', 'topic-bulk-actions-modal full');
+    },
+
+    closeTopics: function() {
+      this.forEachPerformed({type: 'close'}, function(t) {
+        t.set('closed', true);
+      });
     },
 
     changeCategory: function() {
diff --git a/app/assets/javascripts/discourse/templates/modal/bulk_actions_buttons.js.handlebars b/app/assets/javascripts/discourse/templates/modal/bulk_actions_buttons.js.handlebars
index 88c8763eb..e17be58e3 100644
--- a/app/assets/javascripts/discourse/templates/modal/bulk_actions_buttons.js.handlebars
+++ b/app/assets/javascripts/discourse/templates/modal/bulk_actions_buttons.js.handlebars
@@ -1 +1,2 @@
 <button class='btn' {{action showChangeCategory}}>{{i18n topics.bulk.change_category}}</button>
+<button class='btn' {{action closeTopics}}>{{i18n topics.bulk.close_topics}}</button>
diff --git a/app/assets/stylesheets/desktop/modal.scss b/app/assets/stylesheets/desktop/modal.scss
index 8445d42a4..857404e57 100644
--- a/app/assets/stylesheets/desktop/modal.scss
+++ b/app/assets/stylesheets/desktop/modal.scss
@@ -251,9 +251,9 @@
   p {
     margin-top: 0;
   }
-  .modal-body {
-    height: 420px;
-    max-height: 420px;
+  &.full .modal-body {
+    height: 400px;
+    max-height: 400px;
   }
 }
 .tabbed-modal {
diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index 0d16de9cd..0cecfb68a 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -604,6 +604,7 @@ en:
         toggle: "toggle bulk selection of topics"
         actions: "Bulk Actions"
         change_category: "Change Category"
+        close_topics: "Close Topics"
         selected:
           one: "You have selected <b>1</b> topic."
           other: "You have selected <b>{{count}}</b> topics."
diff --git a/lib/topics_bulk_action.rb b/lib/topics_bulk_action.rb
index e4dcc6535..85d9a7396 100644
--- a/lib/topics_bulk_action.rb
+++ b/lib/topics_bulk_action.rb
@@ -4,27 +4,36 @@ class TopicsBulkAction
     @user = user
     @topic_ids = topic_ids
     @operation = operation
+    @changed_ids = []
   end
 
   def self.operations
-    %w(change_category)
+    %w(change_category close)
   end
 
   def perform!
     raise Discourse::InvalidParameters.new(:operation) unless TopicsBulkAction.operations.include?(@operation[:type])
     send(@operation[:type])
+    @changed_ids
   end
 
   private
 
     def change_category
-      changed_ids = []
       topics.each do |t|
         if guardian.can_edit?(t)
-          changed_ids << t.id if t.change_category(@operation[:category_name])
+          @changed_ids << t.id if t.change_category(@operation[:category_name])
+        end
+      end
+    end
+
+    def close
+      topics.each do |t|
+        if guardian.can_moderate?(t)
+          t.update_status('closed', true, @user)
+          @changed_ids << t.id
         end
       end
-      changed_ids
     end
 
     def guardian
diff --git a/spec/components/topics_bulk_action_spec.rb b/spec/components/topics_bulk_action_spec.rb
index 3e0d3b7f0..84233d57a 100644
--- a/spec/components/topics_bulk_action_spec.rb
+++ b/spec/components/topics_bulk_action_spec.rb
@@ -1,10 +1,10 @@
 require 'spec_helper'
-require 'topics_bulk_action'
+require_dependency 'topics_bulk_action'
 
 describe TopicsBulkAction do
 
   describe "invalid operation" do
-    let(:user) { Fabricate.build(:user) } 
+    let(:user) { Fabricate.build(:user) }
 
     it "raises an error with an invalid operation" do
       tba = TopicsBulkAction.new(user, [1], type: 'rm_root')
@@ -14,7 +14,7 @@ describe TopicsBulkAction do
 
   describe "change_category" do
     let(:topic) { Fabricate(:topic) }
-    let(:category) { Fabricate(:category) } 
+    let(:category) { Fabricate(:category) }
 
     context "when the user can edit the topic" do
       it "changes the category and returns the topic_id" do
@@ -27,7 +27,7 @@ describe TopicsBulkAction do
     end
 
     context "when the user can't edit the topic" do
-      it "doesn't change the category and returns the topic_id" do
+      it "doesn't change the category" do 
         Guardian.any_instance.expects(:can_edit?).returns(false)
         tba = TopicsBulkAction.new(topic.user, [topic.id], type: 'change_category', category_name: category.name)
         topic_ids = tba.perform!
@@ -36,7 +36,32 @@ describe TopicsBulkAction do
         topic.category.should_not == category
       end
     end
+  end
 
+  describe "close" do
+    let(:topic) { Fabricate(:topic) }
+
+    context "when the user can moderate the topic" do
+      it "closes the topic and returns the topic_id" do
+        Guardian.any_instance.expects(:can_moderate?).returns(true)
+        Guardian.any_instance.expects(:can_create?).returns(true)
+        tba = TopicsBulkAction.new(topic.user, [topic.id], type: 'close')
+        topic_ids = tba.perform!
+        topic_ids.should == [topic.id]
+        topic.reload
+        topic.should be_closed
+      end
+    end
+
+    context "when the user can't edit the topic" do
+      it "doesn't close the topic" do
+        Guardian.any_instance.expects(:can_moderate?).returns(false)
+        tba = TopicsBulkAction.new(topic.user, [topic.id], type: 'close')
+        topic_ids = tba.perform!
+        topic_ids.should be_blank
+        topic.reload
+        topic.should_not be_closed
+      end
+    end
   end
 end
-