BTB can refer to:Back to Black, critically acclaimed second studio album by singer Amy Winehouse.The Brian Travis Band - A California folk rock bandbromothymol blueblood-testis barrierBranch target buffer - (Computer Science) A branch-prediction method used in some microprocessors.An initialism for "Back Tomorrow Bye" in Internet slang.Brigade Troop Battalion - Military acronymB2B - Business to businessBTBBTB