John Gray (1817–1872) was a Roman Catholic bishop who served as the Vicar Apostolic of the Western District of Scotland. Born in Buckie, Moray on 16 June 1817, he was the son of William Gray and Joanna Gray (née Scott). He entered the Scots College in Rome on 30 September 1838, and took the oath on 25 March 1839. He was ordained a subdeacon on 27 March 1841, a deacon on 10 April 1841, and a priest on 1 May 1841. He left the Scots College for the mission in Scotland on 17 April 1843. Bishop Gray died on 14 January 1872, aged 54.