Former Owner
- W. H. Allen & Co.1
- Walter Romeyn Benjamin1
- Weissenau Abbey2
- Wesley L. Boomgaarden1
- Wild, Henry D.1
- Wilfred Merton1
- Wilfrid Voynich3
- Willett Lawrence Adye1
- William Bragge1
- William Bromley1
- William Chmurny12
- William Clarke1
- William Constable1
- William Deys1
- William Draper1
- William Foyle2
- William George Leigh Wasey1
- William H. Crain1
- William H. Robinson Ltd.32
- William Harris Arnold2