Oskar van Hattum is a professional footballer from NZL and is currently 25 years old. At international level, he features for New Zealand U23. His main role on the pitch is Forward. He measures 183cm in height and weighs 77kg. His stronger foot is Both. His estimated market valuation currently stands at 150K €.

His latest transfer saw him join South Island United FC from Valour via on 2025-12-09.

During the OFC Pro League 2026 campaign, Oskar van Hattum made 8 appearances, scoring 0 goals and adding 0 assists. He averaged 0 goals per match from 0 shots, with 0 on target.