Sergey Ivanovich Zayashnikov (Russian: Серге́й Иванович Заяшников) is the President of the Russian Muay Thai League, martial arts writer, TV commentator, promoter, one of the founders of the Muay Thai in Russia. He is the author of the first book about karate in the USSR (Karate Technique, 1990), co-author of the first book about Russian hand combat in Russia (Russian-Style Hand to Hand Combat,1991), co-author of the first book about Muay Thai in Russia (Thailand boxing, 1992).