William "Willy" Mostyn-Owen was a British art historian. He worked for some years with the art expert Bernard Berenson, and was his bibliographer. He was connected with the auctioneers Christie's for 30 years.
- Occupation
- art historian, land owner
- Citizenship
- United Kingdom
- Born
- May 10, 1929
- Died
- May 2, 2011
