| Official Name: | Sidi Bellater |
| Settlement Type: | Commune and town |
| Pushpin Map: | Algeria |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: |  Algeria |
| Subdivision Name1: | Mostaganem Province |
| Subdivision Type2: | District |
| Subdivision Name2: | Aïn Tédelès District |
| Unit Pref: | Imperial |
| Area Total Km2: | 88 |
| Population As Of: | 2008 |
| Population Total: | 6794 |
| Utc Offset: | +1 |
| Coordinates: | 36.0267°N 0.2693°W |
| Postal Code Type: | CP |
| Postal Code: | 27015 |
Sidi Bellater or Sidi Belattar is a town and commune in Mostaganem Province, Algeria. It is located in Aïn Tédelès District. According to the 1998 census it has a population of 6,670.[1]
The town was a colony of the Roman empire, called Quiza Xenitana.[2]