| Lizelle Muller | |
| Birth Date: | 4 October 1984 |
| Birth Place: | Port Elizabeth, South Africa |
| Turnedpro: | 2020 |
| Retired: | Active |
| Racquet: | Salming |
| Event: | Women's singles |
| Highest Ranking: | No. 124 |
| Date Of Highest Ranking: | October 2021 |
| Current Ranking: | No. 124 |
| Date Of Current Ranking: | October 2021 |
| Updated: | October 2021 |
Lizelle Muller, previously known as Lizelle van Niekerk (born 4 October 1984 in Port Elizabeth), is a South African professional squash player.[1] As of October 2021, she was ranked number 124 in the world.[2] She is the sister of Dewald van Niekerk,[3] also a professional squash player.