Ioannis Niarchos is a 24-year-old professional football player from GRE. He currently plays for Wisla Plock, wearing the number 9 shirt. At the international level, he represents Greece U21. He plays primarily as a Forward. His preferred foot is Right. His current market value is estimated at 350K €.

His most recent move was a from Dunajska Streda to Wisla Plock on 2025-07-15.

In the PKO Bank Polski EKSTRAKLASA 2025-2026 season, Ioannis Niarchos scored 0 goals and provided 0 assists across 14 appearances, averaging 0 goals per game with 7 shots attempted and 3 on target.