Ilian Kostov is a 22-year-old professional football player from BUL. He currently plays for Pirin Blagoevgrad, wearing the number 25 shirt. He plays primarily as a Defender. His current market value is estimated at 50K €.

His most recent move was a from Pirin Blagoevgrad U19 to Pirin Blagoevgrad on 2022-07-01.

Throughout the Bulgarian Vtora Liga 2025-2026, Ilian Kostov featured in 16 matches, averaging 0 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.