Ilhéu Grande is an uninhabited island of Cape Verde.

It is the largest of the Ilhéus do Rombo islet group, located 4 km (2 mi) west of Ilhéu de Cima, the other main islet of the group, and 7 km (4 mi) north of the island Brava.

[1] The islet forms a part of the integral nature reserve Ilhéus do Rombo.

[3] Large bird colonies must have existed formerly as the island has thick layers of guano.

The islet was mentioned as "Juan Carnira" in the 1747 map by Jacques-Nicolas Bellin.