| Official Name: | Shamulzayi |
| Native Name: | شملزائی |
| Native Name Lang: | fa |
| Settlement Type: | District |
| Coordinates: | 31.8214°N 67.7706°W |
| Pushpin Map: | Afghanistan |
| Pushpin Label Position: | left |
| Subdivision Type: | Country |
| Subdivision Name: | Afghanistan |
| Subdivision Type1: | Province |
| Subdivision Name1: | Zabul |
Shamulzayi District is a district of Zabul province in southern Afghanistan.[1]
It has a population of about 25,100 as of 2013. The district is mostly populated by the Tokhi tribe of Ghilji Pashtuns.[2]