| Abbreviation | Definition |
|---|---|
| IDBA | International Drag Bike Association |
| IEBA | Inland Empire Biking Alliance |
| IFMR | International Fellowship of Motorcycling Rotarians |
| IMBA | International Mini Bike Association |
| IMBA | International Mountain Bike Association |
| IMBA | nternational Mountain Bicycling Association |
| IMBC | Irish Mountain Bike Club |
| IUF | International Unicycling Federation |
| IVCA | International Veteran Cycling Association |
| JUA | Japan Unicycling Association |
| KCA | Kansas Cycling Association |
| KCIBR | Kluane Chilkat International Bike Relay |
| KLBA | Key Largo Bicycle Association |
| LAMBO | Lakeland Area Mountain Biking Organization |
| LBAC | Lexington Bicycle Advisory Committee |
| LCC | London Cycling Campaign |
| LCDS | London Cycling Design Standards |
| LCI | League Cycling Instructor |
| LCI | League Cycling Instructors |
| LIME | Ladies International Motorcycling Enthusiasts |