Viscount Sidmouth, of Sidmouth in the County of Devon, is a title in the Peerage of the United Kingdom. It was created in 1805 for the former Prime Minister, Henry Addington. In May 1804, King George III intended to confer the titles of Earl of Banbury, Viscount Wallingford and Baron Reading on Addington (an earldom was the customary retirement honour for a former Prime Minister). However, Addington refused the honour and chose to remain in the House of Commons until 1805, when he joined William Pitt the Younger's government as Lord President of the Council with the lesser title of Viscount Sidmouth. His grandson, the third Viscount, briefly represented Devizes in Parliament. The current holder of the title is the latter's great-great-grandson, the eighth Viscount, who succeeded his father in 2005.
The family seat was Upottery Manor, Devon (sold in 1953).
Viscounts Sidmouth (1805)
- Henry Addington, 1st Viscount Sidmouth (1757–1844)
- William Leonard Addington, 2nd Viscount Sidmouth (1794–1864)
- William Wells Addington, 3rd Viscount Sidmouth (1824–1913)
- Gerald Anthony Pellew Bagnall Addington, 4th Viscount Sidmouth (1854–1915)
- Gerald William Addington, 5th Viscount Sidmouth (1882–1953)
- Raymond Anthony Addington, 6th Viscount Sidmouth (1887–1976)
- John Tonge Anthony Pellew Addington, 7th Viscount Sidmouth (1914–2005)
- Jeremy Francis Addington, 8th Viscount Sidmouth (b. 1947)
The heir apparent is the present holder's son the Hon. John Addington (b. 1990)
- Kidd, Charles, Williamson, David (editors). Debrett's Peerage and Baronetage (1990 edition). New York: St Martin's Press, 1990.
- Leigh Rayment's Peerage Pages [self-published source][better source needed]
- Hansard 1803–2005: contributions in Parliament by John Tonge Anthony Pellew Addington, 7th Viscount Sidmouth