Puʻu Kukui is a mountain peak in Hawaiʻi, the highest of the West Maui Mountains. The 5,788-foot summit rises above the Puʻu Kukui Watershed Management Area, an 8,661-acre private nature preserve maintained by the Maui Land & Pineapple Company. The peak was formed by a volcano whose caldera eroded into what is now the Iao Valley.