| San Martín de Luiña | |
| Settlement Type: | Parish |
| Pushpin Map: | Spain |
| Coordinates: | 43.5436°N -6.2225°W |
| Subdivision Type: | Country |
| Subdivision Name: | Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Name1: | Asturias |
| Subdivision Type2: | Province |
| Subdivision Name2: | Asturias |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Cudillero |
San Martín de Luiña is one of nine parishes (administrative divisions) in the Cudillero municipality, within the province and autonomous community of Asturias, in northern Spain.
The population is 987 (INE 2007).
The villages of San Martín de Luiña include: Arbichera, Argatón, Artéu, La Bordinga, Brañaseca, Busfríu, Castañéu, El Cepéu, Cipieḷḷu, Esqueiru, Folgueirúa, Gallineiru, Los Gachuelos, Llamuñu, Ḷḷendepín, La Madalena, La Puerca, La Rondieḷḷa, Salamir, San Cosme, Teixidieḷḷu and Veiciella.