Konstantin Nikolayevich Kaynov (; born 2 May 1977) is a Russian professional football official and a former player. He works as a director with FC Chayka Peschanokopskoye.
He made his debut in the Russian Premier League in 1999 for FC Krylia Sovetov Samara. Kaynov played for Levski Sofia in the A PFG during the 2000/2001 season.
His son Maksim Kaynov is a professional footballer.