Lieutenant-Colonel Thomas Frederic Tweed MC (1890–30 April 1940) was a British soldier and novelist. He was commissioned into the Lancashire Fusiliers. He won the Military Cross in World War I and at the age of 26 was named the youngest lieutenant colonel in the British Army at the time. He became a political adviser to David Lloyd George from 1927 until Tweed's death from a stroke. Tweed was primarily famous for his novels, among which were Blind Mouths and Rinehard. The latter was turned into the successful 1933 film Gabriel Over the White House, directed by Gregory LaCava and starring Walter Huston.