Konstantin Vasilyevich Demenko (; born 11 August 1975) is a Russian professional football coach and a former player. He is an assistant manager for FC Neftekhimik Nizhnekamsk. Playing career He played 13 seasons in the Russian Football National League for PFC Spartak Nalchik and FC KAMAZ Naberezhnye Chelny. External links 1975 births Living people Russian footballers Association football midfielders FC Asmaral Moscow players PFC Spartak Nalchik players FC KAMAZ Naberezhnye Chelny players Russian football managers Sportspeople from Kanagawa Prefecture