Thomas Trenchard (1874–1943) was an American football player and coach.
Thomas Trenchard may also refer to:
Thomas Trenchard (Dorset MP) (1582–1657), English MP for Dorset, 1621, 1645 Thomas Trenchard (died 1671), English MP for Poole Thomas Trenchard (1672–1703), English MP for Dorchester Thomas Trenchard, 2nd Viscount Trenchard (1923–1987), British peer and politician Thomas Whitaker Trenchard (1863–1942), American lawyer and justice of the New Jersey Supreme Court