Former Owner
- Thomas Thomson1
- Thomon Simon Jones1
- Tommaso Compeggio1
- Tours Cathedral1
- Turner Macan1
- Typographic Library and Museum2
- Ulrich Fugger1
- Vatican Library1
- Veit Engelhard Holtzschuher1
- Veit Georg Holtzschuher1
- Vicente Riva Palacio1
- Victor A. Schwarz1
- Walter Ashburner1
- Walter Sneyd7
- Wilfrid Voynich4
- William Babthorpe1
- William Betham1
- William Clarke1
- William Ely1
- William Foyle3