| Ilhéu Grande | |
| Location: | Atlantic Ocean |
| Pushpin Map: | Cape Verde#Atlantic Ocean |
| Pushpin Label Position: | top |
| Pushpin Relief: | 1 |
| Area Km2: | 3 |
| Length Km: | 2.3 |
| Width Km: | 1.1 |
| Elevation M: | 96 |
| Population: | 0 |
Ilhéu Grande is an uninhabited island of Cape Verde. It is the largest of the Ilhéus do Rombo islet group, located 4km (02miles) west of Ilhéu de Cima, the other main islet of the group, and 7km (04miles) north of the island Brava. Its length is 2.3km (01.4miles) from southwest to northeast and the width is approximately 1.1km (00.7miles) from southeast to northwest. It is 96 m high. The islet forms a part of the integral nature reserve Ilhéus do Rombo.[1]
The islet is a volcanic seamount and has a rocky coastline. It is mostly barren but has some scattered vegetation.[2] Large bird colonies must have existed formerly as the island has thick layers of guano. It has been used by goat farmers and whalers in the past. The islet was mentioned as "Juan Carnira" in the 1747 map by Jacques-Nicolas Bellin.[3]