Former Owner
- John Estmond1
- John Harvey Treat1
- John Hinely1
- John Hirst1
- John Ives1
- John Lee1
- John Leeche1
- John M Cuthbert1
- John McRay1
- John Roland Abbey1
- John Vyfyan1
- Joseph E. Widener1
- José Antonio Conde1
- Judah ben Moses, ha-Rofe, ha-Kohen1
- Justin MacCarthy Reagh1
- Keith Jarvis1
- Kenneth X. Robbins1
- Kloster Rebdorf1
- L. C. Harper1
- Lathrop Colgate Harper1