Unforgotten

200px|right Unforgotten is a song included in the Halo 2 Original Soundtrack. Its length is 2:09. The first section of the song is included as one of the subsequent pieces in the main menu of Halo 2. The piece is heard in its entirety on the main menu of Halo 3. It is the only piece to be played on the main menu of two games (with the exception of the Gregorian Chant).

The song was played during one of the many swimming events in the 2008 Beijing Olympics.