Hanalei is a census-designated place (CDP) in Kauaʻi County, Hawaii, United States. The population was estimated at 299 as of 2019. Hanalei means "lei making" in Hawaiian. Alternatively, the name Hanalei also means "crescent bay" and may be indicative of the shape of Hanalei Bay. Hanalei can also be translated as lei valley, referring to the rainbows that color the valley and encircle Hanalei like a wreath.

Kauaʻi County, officially known as the County of Kauaʻi, is a county in the U.S. state of Hawaiʻi. It encompasses the islands of Kauaʻi, Niʻihau, Lehua, and Kaʻula. According to the 2020 Census, the population was 73,298. The county seat is Līhuʻe.