| Nimos | |
| Name Local: | Νίμος |
| Caption Skyline: | View of Symi, with Nimos offshore at top right |
| Coordinates: | 36.5833°N 77°W |
| Elevation Min: | 0 |
| Elevation Max: | 617 |
| Periph: | South Aegean |
| Pop Municipality: | 0 |
Nimos is an uninhabited Greek island in the municipality of Symi, in the Dodecanese island group of the southern Aegean Sea. Located off the northern coast of Symi, from which it is separated by a small shallow strait called Diapori, it has an area of . It is the Ymos island of the ancient Greeks.
The island, like Symi itself and the other surrounding islets, has been proclaimed an archaeological site by Greece's Central Archaeological Council.