Halpenny is a surname. Notable people with the surname include:
Baron Barrymore Halpenny, English commercial artist, book editor, writer and historian of traditions and culture Bruce Barrymore Halpenny, English military historian and author Colum Halpenny (born 1979), Australian-Irish rugby league footballer Ellen Halpenny (born 1990), New Zealand netball player in the ANZ Championship Francess Halpenny, CC, FRSC (born 1919), Canadian editor and professor Ernest Halpenny, PC (1903–1974), Canadian politician Marion Rose Halpenny, English equestrian writer and horsewoman William Halpenny (1882–1960), Canadian track and field athlete