Bad or BAD may refer to: Acronyms Bank Account Debits Tax, an Australian tax Barksdale Air Force Base (IATA airport code: BAD) in Bossier City, Louisiana, United States B.A.D, Taiwanese boy band Bcl-2-associated death promoter, a pro-apoptotic protein Bookworm Adventures Deluxe, a word-forming game by PopCap Games, released in 2006 Bipolar Affective Disorder, disregulatory mood disorder BAD-2, a Soviet armored trolley car Films… (More on Bad)