Ilja Kassjantsuk is a 41-year-old professional football player from EST. He currently plays for FC Maardu, wearing the number 69 shirt. He plays primarily as a Goalkeeper. He stands at 181cm tall and weighs 77kg. His preferred foot is Right.

His most recent move was a Free from FC Maardu to FC Tallinn U21 on 2025-03-01.

In the Estonian Esiliiga 2025, Ilja Kassjantsuk played 4 matches, averaging 0 interceptions, 0 tackles, and 0 clearances per game.