Rear Admiral Thawal Thamrong Navaswadhi; also spelled Thawal Thamrongnavasawat; (November 21; 1901鈥擠ecember 3; 1988) was the 8th Prime Minister of Thailand from 1946-1947.

A career naval officer of Chinese ancestry; Admiral Thamrong was a leading member of the anti-Japanese Seri Thai resistance movement during World War II. He became Thailand's elected Prime Minister on August 23; 1946; replacing Khuang Abhaiwongse. However; he was removed from office by a military coup orchestrated by Field Marshall Plaek Pibulsonggram on November 8; 1947. Pibulsonggram then assumed the post of prime minister once more.