diff --git a/plugins/guests/linux/cap/mount_virtualbox_shared_folder.rb b/plugins/guests/linux/cap/mount_virtualbox_shared_folder.rb
index 2c19ee1c8..d24877242 100644
--- a/plugins/guests/linux/cap/mount_virtualbox_shared_folder.rb
+++ b/plugins/guests/linux/cap/mount_virtualbox_shared_folder.rb
@@ -21,6 +21,11 @@ module VagrantPlugins
 
           @@logger.debug("Mounting #{name} (#{options[:hostpath]} to #{guestpath})")
 
+          if mounted?(machine, guest_path)
+            @@logger.info("Skipping mount: #{guest_path} is already mounted")
+            return
+          end
+
           builtin_mount_type = "-cit #{mount_type}"
           addon_mount_type = "-t #{mount_type}"
 
@@ -72,6 +77,10 @@ module VagrantPlugins
             machine.communicate.sudo("rmdir #{guest_path}", error_check: false)
           end
         end
+
+        def self.mounted?(machine, guest_path)
+          machine.communicate.test("mountpoint -q #{guest_path}")
+        end
       end
     end
   end
diff --git a/test/unit/plugins/guests/linux/cap/mount_virtual_box_shared_folder_test.rb b/test/unit/plugins/guests/linux/cap/mount_virtual_box_shared_folder_test.rb
index 75d3073ea..8ef668842 100644
--- a/test/unit/plugins/guests/linux/cap/mount_virtual_box_shared_folder_test.rb
+++ b/test/unit/plugins/guests/linux/cap/mount_virtual_box_shared_folder_test.rb
@@ -94,6 +94,16 @@ EOF
         cap.mount_virtualbox_shared_folder(machine, mount_name, mount_guest_path, folder_options)
       end
     end
+
+    context "already mounted" do
+      it "skips mounting if already mounted" do
+        expect(folder_plugin).to receive(:capability).with(:mount_type).and_return("vboxsf")
+        expect(comm).to receive(:test).with("mountpoint -q #{mount_guest_path}").and_return(true)
+        expect(comm).not_to receive(:sudo).with(/mount/)
+
+        cap.mount_virtualbox_shared_folder(machine, mount_name, mount_guest_path, folder_options)
+      end
+    end
   end
 
   describe ".unmount_virtualbox_shared_folder" do