William Arthur Charles Cavendish-Bentinck, 6th Duke of Portland, was a British landowner, courtier, and Conservative politician. He notably served as Master of the Horse between 1886 and 1905.
- Occupation
- politician
- Position held
- Member of the Privy Council of the United Kingdom, member of the House of Lords, Lord Lieutenant of Nottinghamshire, Master of the Horse (England)
- Citizenship
- United Kingdom
- Born
- December 28, 1857