| San Martino sulla Marrucina | |
| Official Name: | Comune di San Martino sulla Marrucina |
| Coordinates: | 42.2333°N 27°W |
| Region: | Abruzzo |
| Province: | Chieti (CH) |
| Frazioni: | Colle di Paolo, Fontana, Gamberale |
| Mayor: | Settembrino Giandonato |
| Area Total Km2: | 7 |
| Population Footnotes: | [1] |
| Population Total: | 1029 |
| Population As Of: | Dec. 2004 |
| Population Demonym: | Sanmartinesi |
| Elevation M: | 420 |
| Saint: | St. Joseph |
| Day: | March 19 |
| Postal Code: | 66010 |
| Area Code: | 0871 |
San Martino sulla Marrucina is a comune and town in the province of Chieti in the Abruzzo region of Italy.