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Thomas Miller (North Carolina governor) (died 1685), governor in 1677 •
Thomas Miller, Lord Glenlee (1717–1789), Scottish politician and judge, member of parliament 1761–1766 •
Thomas B. Miller (1896–1976), U.S. representative from Pennsylvania •
Thomas E. Miller (1849–1938), U.S. representative from South Carolina •
Thomas H. Miller (Iowa newspaperman) (1925–2001), Iowa politician and newspaper editor •
Thomas Miller (Saskatchewan) (1876–1945), lieutenant-governor of Saskatchewan in 1945 •
Thomas W. Miller (1886–1973), U.S. representative from Delaware •
Thomas John Miller (born 1944), state attorney general of Iowa •
Thomas V. Miller Jr. (1942–2021), president of the Maryland State Senate •
Thomas J. Miller (diplomat) (born 1948), former U.S. ambassador to Greece •
Sir Thomas Miller, 1st Baronet, of Chichester (1635–1705), MP for Chichester 1689–1695 •
Sir Thomas Miller, 3rd Baronet (c. 1689–1733), MP for Chichester 1715–1727 •
Sir Thomas Miller, 5th Baronet (1731–1816), MP for Lewes 1774–1778 and Portsmouth 1806–1816 •
Thomas Miller (Wyoming politician) (1898–1993), American attorney and politician, member of the Wyoming Senate ==Sports==