John Breynton (1719 – 15 July 1799) was a minister in Halifax, Nova Scotia, Canada. He was born in Trefeglwys, Montgomeryshire, Wales to John Breynton (born 1670 Llanidloes) and his second wife, and baptised on 13 April 1719. He spent his first 14 years between his home at Trefeglwys and school in nearby Newtown. From 1733 to 1738, he attended Shrewsbury School, and in 1738, matriculated at Magdalene College, Cambridge, subsequently gaining a BA in 1741. On 13 September 1778, his first wife died, shortly before the 28 November 1778 wedding of their daughter Anne in St George's, Hanover Square.