| Autelbas | |
| Native Name: | |
| Settlement Type: | Sub-municipality of Arlon |
| Image Map1: | Autelbas Arlon Location.png |
| Map Caption1: | Location of Autelbas in Arlon |
| Pushpin Map: | Belgium#Belgium Luxembourg |
| Subdivision Type: | Country |
| Subdivision Type1: | Community |
| Subdivision Type2: | Region |
| Subdivision Type3: | Province |
| Subdivision Type4: | Arrondissement |
| Subdivision Name4: | Arlon |
| Subdivision Type5: | Municipality |
| Subdivision Name5: | Arlon |
| Coordinates: | 49.65°N 5.8667°W |
| Area Total Km2: | 24.16 |
| Population As Of: | 2022 |
| Population Total: | 2547 |
| Population Density Km2: | auto |
| Postal Code Type: | Postal codes |
| Postal Code: | 6706 |
| Area Code Type: | Area codes |
| Area Code: | 063 |
Autelbas (in French otɛlba/; Luxembourgish; Letzeburgesch: Nidderälter; German: Niederelter) is a sub-municipality of the city of Arlon located in the province of Luxembourg, Wallonia, Belgium. It was a separate municipality until 1977. On 1 January 1977, it was merged into Arlon.[1]