"That's Not Me" is a song written by Brian Wilson and Tony Asher for American rock band the Beach Boys, the third track from their 1966 album "Pet Sounds". It is a work influenced by psychedelic drugs that inspired Wilson to turn his attention inward and probe his deep-seated self-doubts. Wilson explained that the song "reveals a lot about myself, just the idea that you're going to look at yourself and say, 'Hey, now look, that's not me, kind of square off with yourself and say 'this is me, that's not me'." It has been called the track on "Pet Sounds" that most closely resembles a conventional rock song.