| Name of Family or Major Holdings -I- | Place of Origin |
| Igelstr�m | E� |
| Ihre | E� |
| Ikorn | E� |
| Ikornsk�ld | E� |
| Ille | E� |
| Ingelotz | E� |
| Ingemund Ingevaldssons �tt | Sweden |
| Insenstierna | E� |
| af Intorp [Mats Gustavssons �tt] | Sweden |
| Irving | E� |
| Isberg | E� |
| Iserhielm | E� |
| von Issendorff | E� |
| Ivar Nilssons �tt | Sweden |
| de Ixer [Barcelona] | Iberia |