Sisowath Sirik Matak
 Sisowath Sirik Matak (Khmer: ស៊ីសុវត្ថិ សិរិមតះ; January 22 1914 – April 21 1975) was a member of the Cambodian royal family the Varman dynasty under the House of Sisowath. Sirik Matak was mainly notable for his involvement in Cambodian politics particularly for his involvement in the 1970 right-wing coup against his cousin Prince Norodom Sihanouk and for his subsequent establishment along with Lon Nol of the Khmer Republic.