| Official Name: | Anaittha |
| Native Name: | अनैठा |
| Settlement Type: | City |
| Pushpin Map: | Nepal |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Nepal |
| Subdivision Type: | Country |
| Subdivision Name: |  Nepal |
| Subdivision Type1: | Province |
| Subdivision Name1: | Province No. 2 |
| Subdivision Type2: | District |
| Subdivision Name2: | Mahottari District |
| Leader Title: | Mayor |
| Population Total: | 2,533 |
| Population Density Km2: | auto |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Coordinates: | 26.7017°N 85.8264°W |
| Elevation M: | 53 |
| Elevation Ft: | 177 |
| Postal Code Type: | Postal code |
| Postal Code: | 45700 |
| Area Code: | 044 |
Anaittha (Nepali: अनैठा) is a city in Mahottari District, Nepal, which is popular with tourists. Thareshwarnath and Tharhi pokhri is located here. The main work here is farming.[1]