Ioannis Niarchos is a professional footballer from GRE and is currently 24 years old. He is on the books of Wisla Plock and wears shirt number 9. At international level, he features for Greece U21. His main role on the pitch is Forward. His stronger foot is Right. His estimated market valuation currently stands at 350K €.

His latest transfer saw him join Wisla Plock from Dunajska Streda via on 2025-07-16.

During the PKO Bank Polski EKSTRAKLASA 2025-2026 campaign, Ioannis Niarchos made 14 appearances, scoring 0 goals and adding 0 assists. He averaged 0 goals per match from 7 shots, with 3 on target.