John Manners, 2nd Duke of Rutland KG (18 September 1676 – 22 February 1721), styled Lord Roos from 1679 to 1703 and Marquess of Granby from 1703 to 1711, was a British Whig politician who sat in the English and British House of Commons from 1701 until 1711, when he succeeded to the peerage as Duke of Rutland.

[1] Manners was returned as a Whig Member of Parliament for Derbyshire at the first general election of 1701.

At the 1710 British general election, he was returned as MP for both Leicestershire and Grantham.

He succeeded his father as Duke of Rutland on 10 January 1711 and vacated his seats in the house of Commons, having not chosen which he would choose.

They had nine children: Manners succeeded his father as Duke of Rutland on 10 January 1711.