Oskar van Hattum is a 25-year-old professional football player from NZL. At the international level, he represents New Zealand U23. He plays primarily as a Forward. He stands at 183cm tall and weighs 77kg. His preferred foot is Both. His current market value is estimated at 150K €.

His most recent move was a from Valour to South Island United FC on 2025-12-09.

In the OFC Pro League 2026 season, Oskar van Hattum scored 0 goals and provided 0 assists across 8 appearances, averaging 0 goals per game with 0 shots attempted and 0 on target.