Former Owner
- T. Whitcombe Greene1
- T.L. Hartung1
- Tasfa Seyyon1
- Tewolde Berhan1
- Theodore Newton Vail1
- Theodore Williams1
- Thomas Appleby1
- Thomas Mildmay1
- Thomas Richardson1
- Veṇīmādhava Puṇatāmakara1
- Vyšší Brod Cistercian Abbey1
- Walatta Haymanot1
- Walter Paul Havens1
- Walter Sneyd1
- Wilfrid Voynich1
- William Bateman1
- William Bragge1
- William Burdett-Coutts1
- William Camac1
- William Ely1