Kalihiwai (literally, "Kalihi with a stream" in Hawaiian[2] where "kalihi" means "the edge") is a census-designated place (CDP) in Kauaʻi County, Hawaiʻi, United States.

Kalihiwai is located on the north shore of the island of Kauai at 22°12′59″N 159°25′7″W / 22.21639°N 159.41861°W / 22.21639; -159.41861 (22.216269, -159.418705).

Hawaii Route 56 forms the southern edge of the community and leads southeast 17 miles (27 km) to Kapaa and west 5 miles (8 km) to Hanalei.

There were 394 housing units at an average density of 62.5 per square mile (24.1/km2).

25% of all households were made up of individuals, and 4% had someone living alone who was 65 years of age or older.