| Lahmar District | |
| Native Name: | دائرة لحمر |
| Native Name Lang: | ar |
| Type: | District |
| Map Caption1: | Map of Béchar Province highlighting Lahmar District |
| Coordinates: | 31.9333°N 18°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Algeria |
| Subdivision Type1: | Province |
| Subdivision Name1: | Béchar |
| Seat Type: | District seat |
| Seat: | Lahmar |
| Unit Pref: | Metric |
| Area Total Km2: | 3,220 |
| Population Total: | 3,574 |
| Population As Of: | 2008 |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +01 |
| Blank Name Sec1: | Municipalities |
| Blank Info Sec1: | 3 |
Lahmar is a district in Béchar Province, Algeria. It was named after its capital, Lahmar. According to the 2008 census, the total population of the district was 3,574 inhabitants.[1] The region lies to the north of the provincial capital Béchar and is connected to it by a local road.
The district is further divided into 3 communes,[2] all of them being among the 20 least populous communes in Algeria: