Major General Manoonkrit Roopkachorn (, RTGS: Manunkrit Rupkhachon; born Manoon Roopkachorn, 13 December 1935) is a Thai military officer. He was Senator and President of the Senate of Thailand. He took part in the coups of 1976 and 1977, in the unsuccessful coups of 1981 and 1985, and in the 2002 corruption case of Prime Minister Thaksin.