Former Owner
- Walter Ashburner1
- Walter T. Wallace1
- Walter Thomas Wallace1
- Wesley L. Boomgaarden1
- William Augustus White1
- William Cumming Wilde1
- William Douglas-Hamilton, 12th Duke of Hamilton1
- William E. S. (William Edward Seaver) Whitman1
- William Ely1
- William Ewart Gladstone1
- William Foyle1
- William H. Herriman1
- William Harris Arnold1
- William J. Rich1
- William N. Bullard1
- William Stuart1
- Willie Wilde1
- Zanichelli, Mauro1
- Zuccaro, Nello, active 20th century1
- Zucchi, Antonio, active 19th century1