Cape Ofuyu, Coastal promontory in Ishikari, Japan

Cape Ofuyu is a cape on the Sea of Japan coast of Ishikari, Hokkaido, set within sheer cliffs along National Route 231. The cape itself lies in Ishikari, while the Ofuyu Cape Observation Deck stands in the neighbouring Ofuyu settlement of Mashike to the northeast. Three waterfalls drop down the sea cliffs on its northern side.

Long cut off by cliffs, Ofuyu was reached mainly by ferry from Mashike; winter seas often halted service, earning the settlement the name "land island". A telephone line arrived on 18 October 1978, the last Hokkaido settlement to be automated. National Route 231 opened on 10 November 1981, but the Ofuyu Cape tunnel collapsed on 19 December and the road closed until 15 May 1984. Winter closures ended on 22 October 1992.

The name Ofuyu comes from the Ainu word 'uhuy', meaning "burning". The Maşho town history says fires were lit on the cape to guide boats past the cliffs; other explanations point to red rock layers along the coast or a past lightning strike that burned the shore. The cape tip and its cave are called Kamuy-aha, "entrance of the gods".

The cape itself lies in Ishikari, but the Ofuyu Cape observation deck stands in the neighbouring Ofuyu settlement of Mashike, reached by National Route 231. The route was fully opened in 1981 and winter closures ended in 1992, so the road is now passable year-round. The deck looks back at the cliffs and the three waterfalls on the north side.

The cape's Ainu name Kamuy Aha means "god's entrance", referring to a cave at its tip; sudden wind shifts there often caused canoe wrecks, so the deity was seen as malevolent. Three waterfalls drop from the sea cliffs north of the cape; the middle one was named Shiragane Falls in 1981 to mark the full opening of National Route 231.