Kang Kek Iew, also less accurately romanize as Kaing Guek Eav (កាំង ហ្គេកអ៊ាវ), a.k.a. Comrade D[e]uch (មិត្តឌុច); a.k.a. Hang Pin, (b. Nov 17, 1942) was a leader in the Khmer Rouge during its rule of Cambodia from 1975 to 1979. He is best known for heading the Khmer Rouge special branch and running the infamous Tuol Sleng (S-21) prison camp in Phnom Penh.