I
| Title | Date of creation | Surname | Current status | Notes |
|---|---|---|---|---|
| I'Anson | 1652 | I'Anson | extinct 1800 | |
| Ingleby of Ripley | 1642 | Ingleby | extinct 1772 | |
| Ingoldsby of Lethenborough | 1661 | Ingoldsby | extinct 1726 | |
| Irby of Boston | 1704 | Irby | extant | created Baron Boston (1761) in Great Britain. |
| Isham of Lamport | 1627 | Isham | extant |
Read more about this topic: List Of Baronetcies In The Baronetage Of England