Nikoleta "Nikol" Eleftheriadou (born 17 January 1998) is a Greek female water polo player, who plays for Olympiacos and the Greece women's national team. As a player of Olympiacos, she won the 2015 Women's LEN Super Cup. She was part of the Greek national team that won the silver medal at the 2018 European Championship in Barcelona and the bronze medal at the 2015 European Games in Baku.