| Abbreviation | Definition |
|---|---|
| IKC | Irish Kennel Club |
| ILBC | indian landing boat club |
| ILBC | Inglewood Lawn Bowling Club |
| ILC | International Letterboxing Club |
| ILCC | Indiana Lure Coursing Club |
| ILCM | International Ladies Club of Macau |
| ILOC | International Lamborghini Owners Club |
| ILTC | I Love Taiwan Club |
| ILYC | Ida Lewis Yacht Club |
| ILYC | Indian Lake Yacht Club |
| IM | Irish Mafia |
| IMAC | International Miniature Aerobatic Club |
| IMBC | Isle Madame Boat Club |
| IMKC | International Moms and Kids Club |
| IMMAC | Independent Munich Manga and Anime Club |
| IMOC | International MR2 Owners Club |
| IMOC | Italian Motorcycle Owners Club |
| IMRC | Indianhead Model Railroad Club |
| IMTC | Infinite Multisport Triathlon Club |
| IMTC | International Motorcyclists Tour Club |