San Tirso de Abres should not be confused with San Tirso.
| San Tirso de Abres | |
| Settlement Type: | Municipality |
| Native Name: | Santiso d'Abres (Galician-Asturian) |
| Image Alt: | San Tirso de Abres |
| Pushpin Map: | Spain |
| Pushpin Map Caption: | Location in Spain |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Asturias |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Eo-Navia |
| Subdivision Type4: | Judicial district |
| Subdivision Name4: | Castropol |
| Seat Type: | Capital |
| Seat: | El Llano |
| Coordinates: | 43.4083°N -15.6°W |
| Elevation Max M: | 664 |
| Area Total Km2: | 31.41 |
| Population Demonym: | santisao / santisá |
| 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: | María Goretti Quintana Rey |
| Leader Party: | PP |
San Tirso de Abres (Eonavian: Santiso d'Abres) is a municipality in the Autonomous Community of the Principality of Asturias, Spain. It is bordered on the north, south, and west by Lugo province of Galicia, and on the east by the municipalities of Taramundi and Vegadeo. It is the westernmost council in Asturias.
The municipality consists of only one parish, San Salvador. It is one of Eonavian speaking councils of Asturias[1]