Major William Brereton Couchman Lewis, 3rd Baron Merthyr, KBE, TD, PC, styled The Honourable William Lewis between 1914 and 1932, was a British barrister and politician.
- Occupation
- politician
- Position held
- Member of the Privy Council of the United Kingdom, substitute member of the Parliamentary Assembly of the Council of Europe
- Citizenship
- United Kingdom
- Born
- January 7, 1901
- Died
- April 16, 1977
