BLB

BLB may refer to:
 Basketball League Belgium, a governing body for basketball in Belgium
 Black Light Burns, an American industrial rock band
 Blacklight Blue, a fluorescent black light with a dark blue filter coating on the tube
 Blue Letter Bible, a Bible study project founded by the Christian 501(c)3 Sowing Circle
 Howard Air Force Base (IATA: BLB), a former United States Air Force base in Panama