George Reginald Oliver Molyneux Herbert, 8th Earl of Carnarvon (born 10 November 1956), styled Lord Porchester from 1987 to 2001, is a British peer and arable farmer.
His family seat, Highclere Castle, has achieved notability as the primary filming location for the television series Downton Abbey.
Carnarvon and his family live in part of the house, while the rest is used as a venue for hire and is also open to the public much of the summer and some dates during other months.