Oleh Andriyovych Ilyin (; born 8 June 1997) is a Ukrainian professional footballer who plays as a midfielder for Obolon Kyiv, on loan from Kolos Kovalivka.
Ilyin is a product of the FC Chornomorets Odesa and Dnipro Youth Sportive School systems. In June 2017 he was promoted to the main-team squad of FC Dnipro and made his debut for this team in the Ukrainian Second League.
In February 2018 he joined the Ukrainian First League side FC Kolos Kovalivka.