Memoirs of a Teenage Amnesiac (Japanese: 誰かが私にキスをした, Hepburn: Dare ka ga Watashi ni Kisu o Shita) is a 2010 teen drama film directed by Hans Canosa, based on the 2007 young adult novel of the same name by Gabrielle Zevin.

The film stars Maki Horikita, Kenichi Matsuyama, Yuya Tegoshi, and American actor Anton Yelchin.

In November 2008 the film was announced under the title Lost Memories.

The film was originally planned to be shot and produced in the United States.

With this change, the film was able to keep much of the English-language dialogue from the source material.