| Official Name: | Mardyan |
| Native Name: | مردیان |
| Native Name Lang: | fa |
| Settlement Type: | District |
| Pushpin Map: | Afghanistan |
| Pushpin Label Position: | left |
| Subdivision Type: | Country |
| Subdivision Name: | Afghanistan |
| Subdivision Type1: | Province |
| Subdivision Name1: | Jowzjan |
| Subdivision Type2: | Capital |
Mardyan (Persian: مردیان) is a district situated in the central eastern part of the Jowzjan Province, Afghanistan. It borders Mingajik District to the west, Qarqin District to north, Balkh Province and Fayzabad District to the east and Aqcha District to the south. In 2006, the population was 34,200. The district center is the village of Mardyan, located in the central part of the district.