Bruce Lambourne Fowler (born July 10, 1947) is an American trombonist and composer. He played trombone on many Frank Zappa records, as well as with Captain Beefheart and in the Fowler Brothers Band. He composes and arranges music for movies, and has been the composer, orchestrator, or conductor for many popular films.

He is the son of jazz educator William L. Fowler and the brother of multi-instrumentalist Walt Fowler and bassist Tom Fowler. Bruce Fowler is participating in the Band from Utopia, the Mar Vista Philharmonic, and Jon Larsen's Strange News from Mars, featuring Zappa alumni Tommy Mars and Arthur Barrow. He also recorded albums with Air Pocket, a band including his siblings.

Fowler is the recipient of the 2007 Film & TV Music Awards for Best Score Conductor and Best Orchestrator.