Kotokasuga Keigo (琴春日 桂吾, Kotokasuga Keigo, born 25 August 1977 as Keigo Yamada) is a former sumo wrestler from Kasuga, Fukuoka Prefecture, Japan. He began his professional career in 1993, reaching the top makuuchi division some 15 years later in 2008. His highest rank was maegashira 7. He retired in April 2011 after the Japan Sumo Association found him guilty of involvement in match-fixing.