| Montellà i Martinet | |
| Settlement Type: | Municipality |
| Pushpin Map: | Spain Province of Lleida#Spain |
| Pushpin Map Caption: | Location in Catalonia |
| Coordinates: | 42.3625°N 1.6964°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Lleida |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Cerdanya |
| Leader Title: | Mayor |
| Leader Name: | Josep Castells Farràs (2015)[1] |
| Unit Pref: | Metric |
| Area Footnotes: | [2] |
| Area Total Km2: | 55.0 |
| Population Density Km2: | auto |
Montellà i Martinet (pronounced as /ca/) is a municipality in the comarca of Cerdanya and autonomous community of Catalonia, Spain.