Henry Downes (died 1735) was an eighteenth-century Irish Anglican bishop.
[1] He was nominated Bishop of Killala and Achonry on 24 January 1717 and consecrated on 12 May that year.
[2] In 1720 he was translated to Elphin, being nominated on 1 May and appointed by letters patent on 12 May 1720.
[3] In 1724 he was nominated on 17 March to be the Bishop of Derry and appointed by letters patent on 9 April 1724.
Finally on 11 January 1727 he was nominated Bishop of Derry and appointed by letters patent on 8 February 1727.