| Sant Martí Vell | |
| Settlement Type: | Municipality |
| Pushpin Map: | Spain Province of Girona#Spain |
| Pushpin Map Caption: | Location in Catalonia |
| Coordinates: | 42.0219°N 2.9317°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Girona |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Gironès |
| Leader Title: | Mayor |
| Leader Name: | Robert Vilà Brugués (2015)[1] |
| Unit Pref: | Metric |
| Area Footnotes: | [2] |
| Area Total Km2: | 17.5 |
| Population Density Km2: | auto |
Sant Martí Vell is a village in the province of Girona and autonomous community of Catalonia, Spain. The municipality covers an area of and the population in 2014 was 242.[2]