Diplolaemus leopardinus, commonly known as the leopard iguana or the leopard grumbler, is a species of lizard native to the southern tip of South America.

It is found in the Patagonian Desert and in the Araucanía Region of Argentina and Chile.

The leopard iguana has a broad, triangular head and strong jaws.

It is a medium-brown colour with bands of darker brown blotches.

It is found in the Lonquimay Valley, in the Araucanía Region of Chile, at elevations between 1,000 and 2,000 m (3,281 and 6,562 ft).