| Glaronisi | |
| Native Name: | Γλαρονήσι |
| Native Name Lang: | el |
| Coordinates: | 35.4634°N 25.1908°W |
| Map: | Greece |
| Archipelago: | Cretan Islands |
| Country: | Greece |
| Country Admin Divisions Title: | Region |
| Country Admin Divisions: | Crete |
| Country Admin Divisions Title 1: | Regional unit |
| Country Admin Divisions 1: | Heraklion |
| Country Admin Divisions Title 2: | Municipality |
Glaronisi (Greek, Modern (1453-);: Γλαρονήσι, "seagull island", also known as Petalidi (Greek, Modern (1453-);: Πεταλίδι, "limpet"), is an islet off the northwest coast of the island of Dia, north of the Greek island of Crete. Glaronisi is administered from Gouves in Heraklion regional unit.[1]