Robert Montagu, 3rd Duke of Manchester

His Grace The Duke of Manchester
Member of Parliament for Huntingdonshire
In office 1734–1739 Serving with Robert Piggott
Preceded by	John Bigg Robert Piggott
Succeeded by	Robert Piggott Charles Clarke
Personal details
Born	Robert Montagu c. 1710
Died	10 May 1762(1762-05-10) (aged 51–52)
Political party	Whig
Spouse	Harriet Dunch ​ ​ (after 1735)​
Children	4
Parent(s)	Charles Montagu, 1st Duke of Manchester Dodington Greville
Relatives	William Montagu, 2nd Duke of Manchester (brother) Charlotte Byng, Viscountess Torrington (sister)

Robert Montagu, 3rd Duke of Manchester (c. 1710 – 10 May 1762) was a British politician who sat in the House of Commons from 1734 until 1739 when he succeeded to the peerage as Duke of Manchester.