ALCS most commonly refers to the American League Championship Series in Major League Baseball.
ALCS may also refer to:
Abundant Life Christian School, a K4-12 school in Madison, Wisconsin, best known for the shooting in 2024 ALCS transaction monitor, an IBM mainframe transaction processing monitor for the airline industry Authors' Licensing and Collecting Society, a British organization for writers Airborne Launch Control System, the method of launching ICBMs during a nuclear attack
See also
ALC (disambiguation) for the singular of ALCs