Ulambayar Byambajav (Mongolian: Уламбаярын Бямбажав; 24 November 1984 – 28 February 2020), known professionally as Byamba, was a Mongolian sumo wrestler and entertainer. He competed in professional sumo in Japan between 2001 and 2005 under the name Daishōchi Kenta (Japanese: 大翔地 健太). After retiring, he continued as an amateur and was a two-time winner of the Sumo World Championships in 2006 and 2007, and a gold medalist at the 2009 World Games and 2013 World Combat Games. He also appeared in the comedy show Impractical Jokers. He died after a protracted illness in a Los Angeles hospital in February 2020.