The Diego Ramírez Islands are a group of islands. They are in the Drake Passage, about 100 km southwest of Cape Horn. The Ildefonso Islands are 93 km to the north-northwest. There is a group of 6 islands to the north, then there is a waterway of 3 km, then there is another group to the south. There is a weather station in one of the islands. The islands are an important nesting place for birds.