| Valaxa | |
| Native Name: | Βάλαξα |
| Native Name Lang: | el |
| Coordinates: | 38.82°N 24.49°W |
| Map: | Greece |
| Archipelago: | Sporades |
| Area Footnotes: | [1] |
| Area Km2: | 4.34 |
| Elevation M: | 100 |
| Country: | Greece |
| Country Admin Divisions Title: | Region |
| Country Admin Divisions: | Central Greece |
| Country Admin Divisions Title 1: | Regional unit |
| Country Admin Divisions 1: | Euboea |
| Country Admin Divisions Title 2: | Municipality |
| Country Admin Divisions 2: | Skyros |
| Population: | 0 |
| Population As Of: | 2001 |
Valaxa is a Greek island in the Sporades archipelago. It is located southwest of the island of Skyros, of which it is administratively a part. Valaxa's southernmost point, Latomeio Point, has a flashing light as a guide.[2]
Its nearest islands and islets are Erinia to the west and Skyros to the north and east.