Major General Manoonkrit Roopkachorn (Thai: มนูญกฤต รูปขจร, RTGS: Manunkrit Rupkhachon; born Manoon Roopkachorn, 15 December 1935 in Ayutthaya Province) is a former Thai military officer, senator and President of the Senate of Thailand. A leader of the "Young Turks" clique of military officers, 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 Shinawatra.