| Yonca Şevval Erdem | |
| Nationality: | Turkish |
| Birth Date: | 3 April 1996 |
| Height: | 167 cm |
| Weight: | 58 kg |
| L/R: | Right |
| Position: | Wing |
| Currentclub: | 35 Water Polo and Swimming Club |
| Currentnumber: | 3 |
| Nationalyears1: | 2016 |
Yonca Şevval Erdem (born 3 April 1996) is a Turkish water polo player, playing at the wing position. She is part of the Turkey women's national water polo team. She competed at the 2016 Women's European Water Polo Championship.
She is a member of 35 Water Polo and Swimming Club.