Robert Manners may refer to:

• Lord Robert Manners (British Army officer, died 1782) (c. 1721–1782), British general
• Lord Robert Manners-Sutton (1722–1762), his nephew
• Robert Manners (British Army officer, born 1758) (1758–1823), general and MP for Great Bedwyn and Cambridge
• Lord Robert Manners (Royal Navy officer) (1758–1782), killed at the Battle of the Saintes
• Lord Robert Manners (British Army officer, born 1781) (1781–1835), British major-general and politician

• Duke of Rutland

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