| 811 | Iron Ornamental Works | Company Product |
| 812 | Iron Works | Company Product |
| 813 | Ironing Boards | Company Product |
| 814 | Iron Chromium Aluminium Wire | Company Product |
| 815 | Iron Oxide | Company Product |
| 816 | Iron | Company Product |
| 817 | Irish Delicacies | Company Product |
| 818 | Irish Eateries | Company Product |
| 819 | Irish Restaurants | Company Product |
| 820 | Irish Food | Company Product |
| 821 | Ion Exchange Resins | Company Product |
| 822 | Irish Cuisines | Company Product |
| 823 | Irish Bistros | Company Product |
| 824 | Ion Meters | Company Product |
| 825 | Iodoform | Company Product |
| 826 | Investment Companies | Company Product |
| 827 | Iodine Quartz Lights | Company Product |
| 828 | Investment Securities | Company Product |
| 829 | Iodine | Company Product |
| 830 | Inventory Software | Company Product |
| 831 | Inventory Service | Company Product |
| 832 | Inverted Microscopes | Company Product |
| 833 | Intrusion Detection Systems | Company Product |
| 834 | Intruder Alarms | Company Product |
| 835 | Interpretation Service | Company Product |
| 836 | Internet Service Provider | Company Product |
| 837 | International Restaurants | Company Product |
| 838 | International Procurement Office | Company Product |
| 839 | Intravenous Solution Manufacturers | Company Product |
| 840 | Interior Decoration | Company Product |