| Mount Simeon Subdistrict | |
| Native Name: | ناحية جبل سمعان |
| Native Name Lang: | ar |
| Type: | Subdistrict |
| Mapsize: | 250x250px |
| Map Alt: | Afrin Subdistrict in Syria |
| Subdivision Type: | Country |
| Subdivision Type1: | Governorate |
| Subdivision Name1: | Aleppo |
| Subdivision Type2: | District |
| Parts Type: | Subdistricts |
| Parts Style: | para |
| Established Title: | Established |
| Seat Type: | Seat |
| Seat: | Aleppo |
| Area Total Km2: | 663.95 |
| Population: | 2181061 |
| Population Density Km2: | auto |
| Population As Of: | 2004 |
| Population Footnotes: | [1] |
| Area Code Type: | Area code |
| Geocode: | SY020000 |
Mount Simeon Subdistrict (ar|ناحية جبل سمعان|nāḥiyah Jabal Sem‘ān) is a subdistrict of Mount Simeon District in western Aleppo Governorate of northern Syria. Administrative centre is the city of Aleppo.
According to the 2004 census, the subdistrict had a population of 2,181,061.
The cities and towns in the subdistrict are: