Giannis Niarchos (; born 26 June 2002) is a Greek professional footballer who plays as a striker for Ekstraklasa club Wisà Âa Pà Âock.
On 19 July 2024, FC Koà ¡ice acquired Niarchos on a one-year loan, from DAC Dunajská Streda, with option to buy.
On 16 July 2025, Niarchos moved to Polish Ekstraklasa club Wisà Âa Pà Âock, signing a three-year contract.