George Gledstanes (or Gladstanes; c. 1562 – 1615) was an Archbishop of St Andrews during the seventeenth century.
George Gledstanes was a son of Herbert Gladstanes, clerk of Dundee, and one of the bailies of that town. He was born there between 1560 and 1565, and after spending some time at Dundee Grammar School went in 1576 to the university of St. Andrews, where he graduated Master of Arts in 1580. He probably afterwards studied theology under Andrew Melville. He was for some time a teacher of languages in Montrose, and was appointed reader in that town in 1585. Before 23 July 1587 he was ordained minister of St. Cyrus or Ecclesgreig in Kincardineshire, and had at the same time the church of Aberluthnott, or Marykirk, also under his care. During his residence at St. Cyrus he was on several occasions in danger of his life from armed attacks on his house by William Douglas the younger of Glenbervie and others, but was relieved by the exertions of his neighbours.
Gladstanes was a member of the general assembly of 1590. In May 1592 he was presented by the king to the vicarage of Arbirlot in Forfarshire, and was again a member of assembly in that year, and also in 1595, when he was nominated with several others as assessors with the king in the choice of two royal chaplains. About this time he served on several commissions appointed by the general assembly, one of which was for advising with the king on church affairs. The ministers in St. Andrews, Messrs. Black and Wallace, having offended by their preaching, the king ordered them to be summarily removed from their charge, and brought Gladstanes from Arbirlot to fill their place. He was inducted at St. Andrews on 11 July 1597, James Melville very reluctantly preaching on the occasion.