John Joseph "Jack" Ginifer (31 August 1927 – 9 July 1982) was an Australian politician. Ginifer was born in Warracknabeal, Victoria to Joseph Ginifer, a Singer sewing machine salesman from England, and Agnes Harper. He was educated at schools in Benalla, then undertook teacher training at Melbourne Teachers' College and a Bachelor of Arts at the University of Melbourne. He worked as a schoolteacher for more than twenty years from 1945 to 1966, including at Jamieson St Primary School in Warrnambool.