| Dienaba Sy | |
| Birth Date: | 27 June 1995 |
| Birth Place: | Montivilliers, France |
| Nationality: | Senegalese |
| Height: | 1.65 m |
| Position: | Left wing |
| Currentclub: | Nice Handball |
| Clubnumber: | 5 |
| Years1: | 2012–2014 |
| Clubs1: | HB Octeville Sur Mer |
| Years2: | 2014– |
| Clubs2: | Nice Handball |
| Nationalteam1: | Senegal |
Dienaba Sy (born 27 June 1995) is a French-Senegalese handball player for OGC Nice Côte d'Azur Handball and the Senegalese national team.[1]
She competed at the 2019 World Women's Handball Championship in Japan.[2]