TWA was Trans World Airlines, an American airline (1930–2001) which was acquired by American Airlines and subsequently liquidated.
TWA may also refer to:
Arts and entertainment "TWA" (song), 1982, by Ted Hawkins Texas Wrestling Academy, founded 1999 Tri-State Wrestling Alliance, 1992–2001 The Wrestling Alliance, a UK wrestling promotion 1989-2003 which had a 2002-2003 promotional war with All Star Wrestling
Transport Transport and Works Act 1992, a UK law on public transport infrastructure True wind angle, in sailing Trailing wire antenna, on Boeing E-4 aircraft
Other uses Twa, an ethnic group native to the African Great Lakes region T wave alternans, in electrocardiography Teeny Weeny Afro, a hairstyle Towerrunning World Association, a tower running sports body Time-weighted average (PEL), under US safety laws Time-weighted average price, of a financial security Traveling-wave antenna