You can delete an ad group, but after it is deleted, it cannot be restored. The ads in a deleted ad group are not available for display. If you delete an ad group, you still have access to its historical performance data.

To delete an ad group:

• Click the Campaigns tab.
• Click a campaign name.
• Click the box next to the ad group(s) you want to delete.
• Click Delete.

To learn more, please view the Deleting Ad Groups article.