Former Owner
- Thomas Wall1
- Thomas de Grey, 2nd Earl de Grey1
- Thomon Simon Jones1
- Ulrich Fugger1
- Vatican Library1
- Veit Engelhard Holtzschuher1
- Veit Georg Holtzschuher1
- Virginia Taylor1
- Vladimir G. Simkhovitch1
- Walter Ambrose Heath Harding1
- Ward Murphey Canaday1
- Wheldon & Wesley1
- Wilfrid Voynich1
- William Babthorpe1
- William Caxton1
- William Cecil, 1st Baron Burghley1
- William Douglas-Hamilton, 12th Duke of Hamilton1
- William Emery Nickerson1
- William Ewart Gladstone1
- William Harcourt Hooper1