| Abbreviation | Definition |
|---|---|
| LWRC | Lake Washington Rowing Club |
| LYC | Lahaina Yacht Club |
| LYC | Lakewood Yacht Club |
| LYC | Larchmont Yacht Club |
| LYC | Lewes Yacht Club |
| LYC | Long Yang Club |
| LYC | Lunenburg Yacht Club |
| LYD | Live Your Dreams |
| MAAC | Marine Affairs Alumni Club |
| MAAC | Midwest Antique Airplane Club |
| MAAC | Miles Across America Club |
| MAAC | Modesto Area Aquatic Club |
| MACAM | Model Air Club Athus Messancy |
| MACC | Metro Atlanta Cycling Club |
| MACOSA | Model A Club of South Africa |
| MAD | VIT University - Make a Difference |
| MADC | Madame Alexander Doll Club |
| MAFC | Mid America Fantail Club |
| MAFC | Monmouth Area Flying Club |
| MAIC | Mid Atlantic Impreza Club |