| Official Name: | Aïn Arnat District |
| Native Name: | دائرة عين أرنات |
| Settlement Type: | District |
| Mapsize: | 180px |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Subdivision Type: | Country |
| Subdivision Name: |  Algeria |
| Subdivision Type1: | Province |
| Subdivision Name1: | Setif Province |
| Seat Type: | County seat |
| Seat: | Aïn Arnat |
| Unit Pref: | Imperial |
| Area Total Km2: | 58.46 |
| Population Total: | 95 384 |
| Population As Of: | 2008 |
| Population Density Km2: | 154 |
| Timezone: | CET |
| Utc Offset: | +1 |
The Aïn Arnat district is an Algerian administrative district in the Sétif province.
The District is composed of four communes: El Ouricia, Ain Arnat, Mezloug and Aïn Abessa.
Aïn Arnat District is located in the west of Sétif province and is bordered to the north by the communes: