Portein
| Portein | |
|---|---|
| Location of Portein | |
| Coordinates: 46°43′N 9°24′E / 46.717°N 9.400°E | |
| Country | Switzerland | 
| Canton | Graubünden | 
| District | Hinterrhein | 
| Area | |
|  • Total | 3.42 km2 (1.32 sq mi) | 
| Elevation | 1,167 m (3,829 ft) | 
| Population  (December 2007) | |
|  • Total | 22 | 
| • Density | 6.4/km2 (17/sq mi) | 
| Time zone | UTC+01:00 (Central European Time) | 
| • Summer (DST) | UTC+02:00 (Central European Summer Time) | 
| Postal code(s) | 7423 | 
| SFOS number | 3664 | 
| ISO 3166 code | CH-GR | 
| Surrounded by | Flerden, Masein, Safien, Sarn, Tartar | 
| Website | SFSO statistics | 
Portein (Romansh: Purtagn) was a municipality in the district of Hinterrhein in the Swiss canton of Graubünden. On 1 January 2010 the municipalities of Portein, Präz, Sarn and Tartar merged into the municipality of Cazis.