Kyrylo Serhiyovych Romanyuk (; born 21 March 2001) is a Ukrainian amateur football defender who plays for Lokomotyv Kyiv.
Romanyuk is a product mainly of Dnipro and Shakhtar Donetsk youth sportive school systems.
He made his début for FC Mariupol in the Ukrainian Premier League as a substituted player in the additional time of a match against defending champion FC Shakhtar Donetsk on 1 December 2019.
His twin brother Bohdan is also a professional footballer.