John Ryder (c. 1697 – 4 February 1775) was the Church of Ireland Bishop of Down and Connor, from 1743 to 1752, and then Archbishop of Tuam, from 1752 to his death in 1775.
He was educated at Charterhouse School and Queens' College, Cambridge, where he graduated BA in 1715, MA in 1719, and DD in 1741.
Only a year later he was translated to the see of Down and Connor, and was further promoted, in March 1752, to be archbishop of Tuam and bishop of Ardagh.
Ryder spent his later years at Nice, where he died on 4 February 1775 from the effects of a fall from his horse.
His daughter Catherine married a John Hamilton and, travelling on the Continent, met and became a dear friend of Yekaterina Romanovna Vorontsova-Dashkova, a major figure of the Russian Enlightenment.