Brian Bell (born December 9, 1968) is the rhythm guitarist in Weezer.
Bell was born in Knoxville, Tennessee, where his father is a faculty member of the Geography Department at The University of Tennessee, Knoxville. He joined Weezer in 1993 during the recording of The Blue Album, replacing Jason Cropper. Bell also fronts his own band, Space Twins. He is known for a great fashion sense. His eclectic wardrobe is always colorful and often bears the hallmarks of a Sixties-revivalist. Bell is lovingly nicknamed "The Sass Master" by a particular demographic of Weezer fans.