| Mahdi El Khammasi | |
| Fullname: | Mahdi El Khammasi |
| Birth Date: | 8 May 1987 |
| Birth Place: | Qatar |
| Years1: | 2008–2011 |
| Clubs1: | Qatar |
| Years2: | 2011–2021 |
| Clubs2: | Al-Kharaitiyat |
Mahdi El Khammasi (Arabic:المهدي الخماسي) (born 8 May 1987) is a Qatari former footballer.