Leonard Anthony Boyle (30 November 1930 – 1 June 2016) was a New Zealand bishop. He was the fifth Catholic Bishop of Dunedin from 1983 to 2005.

Boyle was born in Nightcaps, Southland, New Zealand, on 30 November 1930 and was educated at Sisters of Mercy convent schools in Nightcaps and Winton. He received his secondary education at St Kevin's College, Oamaru, before training for ordination at Holy Name Seminary in Christchurch and Holy Cross College in Mosgiel. He was ordained as a priest in Winton on 31 June 1961. He held appointments as curate in South Dunedin (1961–1964) and Georgetown, Invercargill (1964–1970). He was parish priest in South Dunedin (1970–1972) and at St. Mary's Basilica, Invercargill (1972–1983). He was appointed coadjutor bishop for the Dunedin diocese on 27 January 1983 and was ordained as a bishop at Dunedin's town hall on 3 May 1983.