B101 may refer to:

Radio stations branded "B101" CIQB-FM, 101.1 MHz in Barrie, Ontario WBQB, 101.5 MHz in Fredericksburg, Virginia WWBB, 101.5 MHz in Providence, Rhode Island WBEB, 101.1 MHz in Philadelphia, Pennsylvania

Other B101 road (Great Britain) Blackburn B-101 Beverley (1950), a transport airplane