| Rionansa | |
| Settlement Type: | Municipality |
| Pushpin Map: | Spain |
| Pushpin Map Caption: | Location in Spain |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Cantabria |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Saja-Nansa |
| Subdivision Type4: | Judicial district |
| Subdivision Name4: | San Vicente de la Barquera |
| Seat Type: | Capital |
| Seat: | Puentenansa |
| Coordinates: | 43.2547°N -4.4025°W |
| Elevation M: | 200 |
| Area Total Km2: | 118.02 |
| Population Density Km2: | auto |
| Blank Name Sec1: | Official language(s) |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Area Code Type: | Dialing code |
| Leader Title: | Alcalde |
| Leader Name: | José Carlos Lavín Cuesta |
Rionansa is a municipality located in the autonomous community of Cantabria, Spain.[1]
This municipality is located in the Nansa River Valley, from which it takes its name, in western Cantabria. The territory is close to one hundred and twenty square miles, all of them belonging to the National Game Reserve Saja.