Boyack is a surname and may refer to one of the following:
Alf Boyack (1877–1947), Australian rules footballer Pat Boyack (born 1967), American electric blues guitarist and songwriter Rachel Boyack, New Zealand politician Ronald Boyack (1906–1988), Trinidadian cricketer Sarah Boyack (born 1961), Scottish Labour Party politician Steven Boyack (born 1976), Scottish professional footballer