| Official Name: | Guemar |
| Native Name: | ﻗﻤﺎر |
| Settlement Type: | Commune and town |
| Mapsize: | 250px |
| Pushpin Map: | Algeria |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location of Guemar within Algeria |
| Subdivision Type: | Country |
| Subdivision Name: |  Algeria |
| Subdivision Name1: | El Oued Province |
| Subdivision Type2: | District |
| Subdivision Name2: | Guemar District |
| Unit Pref: | Metric |
| Population As Of: | 2008 |
| Population Total: | 39,168 |
| Utc Offset: | +1 |
| Coordinates: | 33.5°N 56°W |
| Elevation M: | 63 |
Guemar (Arabic: ﻗﻤﺎر) is a Saharan oasis town in Algeria near the Tunisian border, in the Oued Souf area of the El Oued Province, about 20 km north of El Oued. It includes a zaouia and a border post. According to the 2008 census it has a population of 39,168,[1] up from 29,185 in 1998,[2] with an annual growth rate of 3.0%.[1]
Guemar has a hot desert climate (Köppen climate classification BWh), with very hot summers and mild winters. Rainfall is light and sporadic, and summers are particularly dry.
Guemar lies on the N48 highway from El Oued to Still and then Biskra via the N3. The town is served by Guemar Airport.
8.5% of the population has a tertiary education (the highest in the province), and another 15.5% has completed secondary education.[3] The overall literacy rate is 78.5%, and is 85.5% among males and 71.4% among females.[4]
The commune of Guemar is composed of 13 localities:[5]
Neighbouring towns and cities