Admiral The Honourable Duncombe Pleydell-Bouverie (28 June 1780 – 5 November 1850), was a British naval commander and Whig politician. Pleydell-Bouverie was the second son of Jacob Pleydell-Bouverie, 2nd Earl of Radnor, and the Honourable Anne Duncombe, daughter of Anthony Duncombe, 1st Baron Feversham. William Pleydell-Bouverie, 3rd Earl of Radnor, was his elder brother. Pleydell-Bouverie married Louisa, daughter of Joseph May, in 1809. He died in November 1850, aged 70.