| East Atadei | |
| Also Known As: | South Lembata |
| States: | Indonesia |
| Region: | Lembata |
| Speakers: | 7,000 |
| Date: | 2008 census |
| Ref: | e18 |
| Familycolor: | Austronesian |
| Fam3: | Central–Eastern |
| Fam4: | Flores–Lembata |
| Fam5: | Lamaholot |
| Fam6: | Levuka–South Lembata |
| Iso3: | lmf |
| Glotto: | sout2896 |
| Glottorefname: | Eastern Atadei |
| Pushpin Map: | Indonesia Lesser Sunda Islands#Indonesia#Southeast Asia |
| Coordinates: | -8.5°N 123.53°W |
East Atadei, also known as South Lembata from its location, is a Central Malayo-Polynesian language of Indonesia spoken in the Atadei District of Lembata, an island east of Flores.[1]