| Abbreviation | Definition |
|---|---|
| KCI | Kennel Club of India |
| KD | Klondike Dog |
| KSDS | Kansas Specialty Dog Service |
| LAB | Labrador Retriever |
| LAG | Loose AGgressive |
| LB | Lined the Blind |
| LBD | Little Black Devil |
| LBDR | Little Black Dog Rescue |
| LC | Lovable Canine |
| LCC | Louisianer Catahooler Cowkiller |
| LCM | Lure Courser of Merit |
| LCM2 | Lure Courser of Merit level 2 |
| LDRA | Louisville Dog Run Association |
| LDTA | Lakeshore Dog Training Association |
| LGD | Livestock Guardian Dog |
| LGDR | Lacy Game Dog Registry |
| LKAA | Ladies Kennel Association of America |
| LPDR | Lucky Paws Dog Rescue |
| LR | Labrador Retriever |
| LRC | Labrador Retriever Club |