William Henry Edgcumbe, 4th Earl of Mount Edgcumbe, GCVO, PC, DL, styled Viscount Valletort between 1839 and 1861, was a British courtier, Conservative politician, and Volunteer officer.
- Occupation
- politician
- Position held
- Member of the Privy Council of the United Kingdom, member of the 18th Parliament of the United Kingdom, member of the House of Lords, Lord Lieutenant of Cornwall
- Citizenship
- United Kingdom of Great Britain and Ireland
- Born
- November 5, 1833