Sako Chivitchian (born March 11, 1984) is an Armenian-born American mixed martial arts (MMA) fighter who competes in the lightweight division. He emigrated to the United States and is based in Los Angeles. A full-time professional MMA competitor since 2009, Chivitchian mostly competed in his regional circuit of California before signing with the Ultimate Fighting Championship to appear on The Ultimate Fighter: Team GSP vs. Team Koscheck.