Ausserbinn
| Ausserbinn | |
|---|---|
| Location of Ausserbinn | |
| Coordinates: 46°23′N 8°9′E / 46.383°N 8.150°E | |
| Country | Switzerland | 
| Canton | Valais | 
| District | Goms | 
| Municipality | Ernen | 
| Area | |
|  • Total | 4.5 km2 (1.7 sq mi) | 
| Elevation | 1,304 m (4,278 ft) | 
| Population  (2000) | |
|  • Total | 47 | 
| • Density | 10/km2 (27/sq mi) | 
| Time zone | UTC+01:00 (Central European Time) | 
| • Summer (DST) | UTC+02:00 (Central European Summer Time) | 
| Postal code(s) | 3995 | 
| SFOS number | 6051 | 
| ISO 3166 code | CH-VS | 
| Website | www | 
Ausserbinn is a former municipality of the canton of Valais, Switzerland, and now part of the municipality of Ernen. Prior to its incorporation within Ernen, it was one of Switzerland's smallest municipalities with a population of only 47 as of 2000.
The village covers a total area of 4.5 km² and ranges in elevation from 1100 m to 2500 m on the mountain of Eggerhorn. The centre lies at 1300 m above sea level. Ausserbinn is situated in the Binn Valley, well known for its abundant flora and minerals.
A Postbus route connects Ausserbinn to the railway station at Fiesch.