TWA was Trans World Airlines, an American airline (1930–2001).

TWA may also refer to:

• "TWA" (song), 1982, by Ted Hawkins
• Texas Wrestling Academy, founded 1999
• Tri-State Wrestling Alliance, 1992–2001

• 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

• Twa, a Pygmy people
• 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

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