John Daniel "Jack" Bergin FRACP FRCP (17 January 1921 – 22 July 1995) was a distinguished neurologist and Catholic anti-abortion apologist. He was born in Stratford, New Zealand to Martin Bernard Bergin and Minni Bergin (née Hignett). Martin Bergin was a barrister and solicitor in Stratford. Minni was a full-time mother and homemaker who died when Jack was only 12 years old, leaving a large family. Bergin was married to Lorna Stark and had eight children, two of whom have become doctors, and one of whom is also a neurologist. He died on 22 July 1995, aged 74.