Harry Gregg was born on 25 October 1932 in Tobermore, County Londonderry, Northern Ireland, UK. He was married to Carolyn Maunders and Mavis Markham. He died on 16 February 2020 in Northern Ireland, UK.
He was awarded the MBE (Member of the Order of the British Empire) before being awarded the OBE (Officer of the Order of the British Empire) in the 2019 Queen's New Years Honours List for his services to Football. He lived in Londonderry, Northern Ireland.