Disclosed are various embodiments for providing confirmations for list modifications. A network page is sent to a client. The network page includes one or more components for requesting that one or more items be added to a list of items. The item(s) are added to the list of items in response to a request from the client. A display region is encoded for rendering in the client as a layer superimposed on the network page. The display region includes a confirmation that the item(s) have been added to the list of items. The display region includes one or more undo components for requesting that a last modification to the list of items be reversed.