Sebastian Kowalczyk is a 28-year-old professional football player from POL. He currently plays for Polonia Warszawa, wearing the number 27 shirt. He plays primarily as a Midfield. He stands at 169cm tall and weighs 54kg. His preferred foot is Right. His current market value is estimated at 500K .

His most recent move was a from Zaglebie Lubin to Polonia Warszawa on 2026-07-01.

Across 5 appearances in the PKO Bank Polski EKSTRAKLASA 2025-2026, Sebastian Kowalczyk registered 0 goals and 0 assists, while completing 4 key passes out of 38 total passes with a passing accuracy of 6.6.