Nathaniel James Merriman (4 April 1809 – 15 August 1882) was the third Bishop of Grahamstown from 1871 until his death. He was educated at Winchester College and Brasenose College, Oxford; and ordained in 1833. He was curate then Vicar of Street, Somerset until he emigrated to South Africa. He rose to become Archdeacon of Grahamstown then Dean of Cape Town before being elevated the Episcopate.