| Official Name: | Reumén |
| Subdivision Type: | Region |
| Subdivision Name: | Los Ríos |
| Subdivision Type1: | Province |
| Subdivision Name1: | Valdivia |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Paillaco |
| Subdivision Type3: | Commune |
| Subdivision Name3: | Paillaco |
| Government Type: | Municipal |
| Leader Title: | Alcade |
| Population As Of: | 2002 census http://www.ine.cl/canales/chile_estadistico/demografia_y_vitales/demografia/demografia.php |
| Population Total: | 947 |
| Timezone: | Chilean Standard |
| Utc Offset: | −04:00 |
| Timezone Dst: | Chilean Daylight |
| Utc Offset Dst: | −03:00 |
| Coordinates: | -39.99°N -72.8328°W |
| Elevation M: | 68 |
| Area Code: | Country + town = 56 + 63 |
Reumén is a village (Spanish; Castilian: pueblo) located along Chile's Southern Railway about 8 km north of Paillaco. The village is bordered in the southeast by Collilelfu River.