"Fiddle About" is a song written by John Entwistle of The Who. It appears as the twelfth track on the group's first rock opera, Tommy (1969). In the song, which follows Tommy's parents discussing whether or not they should leave him with his Uncle Ernie in the song "Do You Think It's Alright?", Tommy is sexually abused by his "wicked" Uncle Ernie.
"Fiddle About" and "Cousin Kevin" were the only two songs on Tommy written by John Entwistle. When asked why he wrote the songs, Entwistle replied:
Pete said that there were two characters that he thought he himself couldn't do as good a job as me in describing. One was a homosexual uncle and the other was a cruel cousin, which were supposed to be two of Tommy's traumatic experiences, that and the acid queen. I found it so easy that I'd written "Fiddle About," with the character of Uncle Ernie, by the time I'd got back to the room. If I've got a subject, an idea for a song, then it comes almost immediately.
The song features a French horn played by Entwistle.