| Poros | |
| Name Local: | Πόρος |
| Periph: | Western Macedonia |
| Periphunit: | Grevena |
| Municunit: | Ventzio |
| Community: | Knidi |
| Population: | 79 |
| Population As Of: | 2021 |
| Coordinates: | 40.1067°N 52.8°W |
| Postal Code: | 511 00 |
| Area Code: | +30-2462 |
| Licence: | PN |
| Elevation: | 610 |
Poros (before 1927: Γκουστάμ – Gkoustam)[1] is a village of the Grevena municipality. Before the 2011 local government reform it was a part of the municipality of Ventzio.[2] The 2021 census recorded 79 residents in the village. Poros is a part of the community of Knidi.