Thomas Lascelles may refer to:
Thomas Lascelles (engineer) (1670–1751), British army officer Thomas Lascelles (died 1697), English Member of Parliament Thomas Lascelles (1624–1658), officer in the Commonwealth’s army Thomas Lascelles (born 1982), son of Jeremy Lascelles
See also Tommy Lascelles (Sir Alan Frederick "Tommy" Lascelles, 1887–1981), private secretary to George VI and Elizabeth II