Lionel Albert Jack "John" Bishop OBE (26 October 1903 – 14 December 1964) was an Australian academic, conductor and patron of the arts.
Bishop played a leading role in the development of music education in Australia and was a founder of the Adelaide Festival of Arts.
In 1948, Bishop became a professor of music at the University of Adelaide, where he reformed the curriculum and faculty and set up a visiting lectureship program.
He formed a partnership with Sir Llyod Dumas in the late 1950s to help found a major arts event in South Australia.
He died suddenly in the foyer of Australia House in London, of hypertensive cardiovascular disease, on 14 December 1964, aged 61.