| Monterroso | |
| 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: | Lugo |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | A Ulloa |
| Population Demonym: | Monterrosino, -a |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 27560 |
| Area Code Type: | Dialing code |
| Leader Title: | Alcalde |
| Leader Name: | Rocío Seijas Vázquez |
| Leader Party: | IxM |
Monterroso is a municipality in the province of Lugo, in the autonomous community of Galicia, Spain.[1] It belongs to the comarca of A Ulloa.
Monterroso was the seat of an important tenencia in medieval Galicia. Among its known tenants were: