- Ibizan Hound
- Icelandic Sheepdog
- Indian Bullterrier
- Irish Bull Terrier
- Irish Red and White Setter
- Irish Setter
- Irish Staffordshire Terrier
- Irish Terrier
- Irish Water Spaniel
- Irish Wolfhound
- Istarski Kratkodlaki Gonic
- Istarski Ostrodlaki Gonic (Istrian Coarse-Haired Hound)
- Istrian Sheepdog
- Italian Greyhound
- Italian Spinone – see Spinone Italiano