"She Knows Me Too Well" is a song written by Brian Wilson and Mike Love for the American rock band the Beach Boys. It is about a man who is engrossed and obsessed in his own jealousy and insecurity. It was released on the Beach Boys' 1965 album Today!, initially serving as the B-side of their "When I Grow Up (To Be a Man)" single in 1964. The lead vocal is sung by Brian Wilson.