| Eirini Ninou | |
| Nationality: | Greece |
| Birth Date: | 20 September 2002 |
| Birth Place: | Glyfada, Greece |
| Height: | 170 cm |
| Weight: | 62 kg |
| L/R: | R |
| Position: | Wing |
| Currentclub: | Ethnikos Piraeus Water Polo Club |
| Currentnumber: | 7 |
| Clubs1: | Ethnikos Piraeus Water Polo Club |
Eirini Ninou (born 20 September 2002)[1] is a Greek water polo player for Ethnikos Piraeus in Greece. She is one of the best strikers in Europe in water polo.[2] [3]
Ninou was a part of the Greek national team winning the silver medal in the 2022 Women's European Water Polo Championship at Split, Croatia, and also the silver medal in the 2024 Women's European Water Polo Championship at Eindhoven, The Netherlands.[4] [5] With Ethnikos she won the 2023–24 Greek Cup beating Piraeus rivals, Olympiacos.