| Marmaro | |
| Native Name: | Μάρμαρο |
| Native Name Lang: | el |
| Coordinates: | 34.9487°N 26.1275°W |
| Map: | Greece |
| Archipelago: | Cretan Islands |
| Area Km2: | 0.008 |
| Country: | Greece |
| Country Admin Divisions Title: | Region |
| Country Admin Divisions: | Crete |
| Country Admin Divisions Title 1: | Regional unit |
| Country Admin Divisions 1: | Lasithi |
| Country Admin Divisions Title 2: | Municipality |
| Population: | 0 |
| Population As Of: | 2001 |
Marmaro (Greek, Modern (1453-);: Μάρμαρο, "marble"), is an uninhabited Greek islet, located south of cape Goudero on the coast of Lasithi, eastern Crete, in the Libyan Sea. It forms a close group of islands with Koufonisi, Makroulo, Strongyli, and Trachilos.