William Matthew Wand Addison, 4th Viscount Addison (born 13 June 1945) is a British peer.
The son of Michael Addison, 3rd Viscount Addison, he succeeded the Viscountcy on the death of his father in 1992.
[1] In the House of Lords, Viscount Addison had sat as a Conservative peer until the House of Lords Act 1999 removed his automatic right to sit in the House.
He has stood in subsequent by-elections for election to the House, but to date has been unsuccessful.
[citation needed] On 10 October 1970, he married Joanna Mary Dickinson, with whom he had the following children: In 1991, he married Lesley Ann Mawer.