Andreas William Heinesen (15 January 1900 – 12 March 1991) was a poet, novel writer, short story writer, children's book writer, composer and painter from the Faroe Islands.
William Heinesens debutroman fra 1934 skildrer med frodigt lune den moderne tids indtog i et lille isoleret øsamfund, hvor middelalderlige tilstande stadig råder.