ETW may refer to: East to West, an American Contemporary Christian music duo active 1993–1997 Eastern Trombone Workshop, one of the largest annual events for trombone in the world, held at Brucker Hall in Fort Myer, Virginia Empire: Total War, a strategy game by Creative Assembly End Time Warriors, an American Christian rap group active 1989–1997 E.T.W. (album), a 1989 album by End Time Warriors The European Transonic Wind Tunnel, a high-Reynolds-number transonic wind tunnel using nitrogen as test gas Event Tracing for Windows, a software analysis tool