Sir Nicholas Rainton (1569–19 August 1646) was an English merchant who was Lord Mayor of London in 1632.
Life
He was the third son of Robert Rainton of Heighington, Lincolnshire and was baptised in the parish of Washingborough on 10 June 1569. On 16 November 1602 he married Rebecca Moulson at the church of St Christopher le Stocks in the City of London.
Rainton was a City of London merchant, a member of the Worshipful Company of Haberdashers and was elected Sheriff of London in 1617 - a position which was not taken up immediately. On 22 June 1621 he was elected an alderman of the City of London for Tower ward. He served as Sheriff of London from 1621 to 1622 and as Master of the Haberdashers Company from 1622 to 1623. In 1632, he was elected Lord Mayor of London and was Master of the Haberdashers Company again from 1632 to 1633. He was knighted on 5 May 1633. In 1634 he became alderman for Cornhill and president of St Bartholomew's Hospital until his death.
