Josef Kolarik is a 19-year-old professional football player from CZE. He currently plays for FK Mladá Boleslav, wearing the number 49 shirt. At the international level, he represents Czechia Republic U17. He plays primarily as a Forward. His preferred foot is Right. His current market value is estimated at 1.2M €.

His most recent move was a from SK Slavia Prague U19 to Mlada Boleslav on 2025-06-30.

In the Czech Chance Liga 2025-2026 season, Josef Kolarik scored 2 goals and provided 1 assists across 24 appearances, averaging 0.1 goals per game with 16 shots attempted and 5 on target.