Nikolai Nikolayevich Kashentsev (; born 19 July 1974) is a Russian professional football coach and a former player. He is an assistant coach of FC Khimik Dzerzhinsk.
He made his professional debut in the Soviet Second League in 1991 for FC Dynamo Barnaul. He played 5 games in the UEFA Intertoto Cup 1997 for FC Lokomotiv Nizhny Novgorod.
He is a brother of Yevgeni Kashentsev.