Sir Thomas Gower, 2nd Baronet of Sittenham (c. 1605–1672) was a member of the Leveson-Gower family. He twice served as High Sheriff of Yorkshire and supported the Royalist cause during the English Civil War.
Gower was knighted at Whitehall on 24 June 1630, and succeeded his father, Sir Thomas Gower of Stittenham, in his estate, and title of Baronet. He was a sufferer for his loyalty to Charles I, having been twice High Sheriff of Yorkshire (1641 and 1662), and attended on the King when he was shut out of Hull. He raised a regiment of dragoons at his own expense, of which his younger brother, Doyley was colonel. After the Restoration he served in Parliament as Member for Malton from 1661 until his death in 1672.
Gower had two wives, first, Elizabeth, daughter of Sir William Howard of Naworth Castle, sister to Charles Earl of Carlisle, and second, Frances daughter and coheir of Sir John Leveson, of Haling in Kent, and of Lilleshall in Shropshire, by Frances his wife, daughter and heiress of Sir Thomas Sondes, of Throwley in Kent, (elder brother of Sir Michael Sondes, who was grandfather to George Sondes, 1st Earl of Feversham) by Margaret, sister of Henry Brooke, 11th Baron Cobham. By which last Lady, this Sir Thomas Gower had two sons, Edward, and William, ancestor to George Granville Leveson-Gower, 2nd Marquess of Stafford; also a daughter Frances; but by his first wife he had no issue.