Rangitoto Island Scenic Reserve, scenic reserve on a volcanic island in the Auckland Region, New Zealand

Rangitoto Island Scenic Reserve is a protected nature area on a volcanic island off the coast of Auckland. The island features a distinctive cone made of lava and ash that rises over 260 meters (850 feet) and is covered with native forest vegetation.

Rangitoto erupted from the sea about 600 years ago, within the lifetime of the Māori who settled the Auckland isthmus; its name means "red sky" in reference to the glow of the eruption. Māori used the island for fishing and gathering, and it appears in traditional accounts of the region. It was gazetted as a scenic reserve in 1937, and the summit was fortified with a military observation post during the Second World War.

A short ferry ride connects the island to the mainland, with walking tracks of varying difficulty across the terrain. Visit on clear days when paths are dry and safe for hiking to the summit or exploring the forest.

The lava forest is a rare woodland type growing on porous volcanic rock that hosts several native tree species. This close relationship between the volcanic foundation and forest ecosystem makes the island scientifically valuable.