William Awihilima Kahaiali’i (October 17, 1960 – May 18, 2020), known as Willie K, was an American musician who performed in a variety of musical styles, including blues, rock, Hawaiian, and opera. Born and raised in a family of musicians in Lahaina, Hawaii, Willie began performing at the age of 8 alongside his father, Hawaiian jazz guitarist Manu Kahaiali’i.