Ainahou Ranch, Ranch and historic site at Hawaii Volcanoes National Park, United States.

Ainahou Ranch is a historic ranch in Hawaii Volcanoes National Park, on the island of Hawaii. Its main house, built in 1941 for the Shipman family, is a two-story American Craftsman bungalow with redwood siding and a gabled metal roof, set among native ohia trees. The property also includes cattle pens and other ranch structures.

The Shipman family leased 6,324 acres near Kīlauea from the Bernice Pauahi Bishop Estate in 1937 and named the property Ainahou Ranch. Herbert C. Shipman built the family house there in 1941 as a refuge from a feared Japanese invasion, and the ranch raised beef for the military during World War II. The National Park Service bought the land and house in 1971.

The name ʻaina hou means "new land" in Hawaiian, given when the Shipman family leased the acreage in 1937. Herbert Shipman, president of the Hawaii Orchid Society, kept exotic plants here, including some of the first orchids raised on the island, and received a gold medal from the American Orchid Society in 1957.

The ranch lies in a remote part of Hawaii Volcanoes National Park reached via Chain of Craters Road, which runs within a few miles of the site. The house was evacuated in 1969 when a lava flow threatened it, so check current volcanic conditions before setting out. The land was acquired by the National Park Service in 1971.

After a 1946 tsunami killed half the nēnē he raised at Puna, Herbert Shipman built pens at Ainahou to continue the breeding flock. With perhaps 30 birds left in the wild, he released two pairs at Pohakuloa Training Area and worked with British ornithologist Peter Scott to extend the program to England.