Haʻikū is an unincorporated community in Maui County on the island of Maui in the state of Hawaii. For United States Census purposes, it is part of the Haʻikū-Pauwela census-designated place, which also includes Pauwela.

Haʻikū was named for the ancient Hawaiian land section of Haʻikū, which is Hawaiian for "talk abruptly" or "sharp break".