| Abbreviation | Definition |
|---|---|
| KRE | Race Engines |
| KRN | Kart Racing Network |
| KRP | Kalaeloa Raceway Park |
| KRT | Kawasaki Racing Team |
| KTM | Ktm transfers mv agusta |
| KWR | Kyle Wyman Racing |
| LARC | Latin American Racing Channel |
| LARC | Long Acting Reversible Contraceptive |
| LARC | Long acting reversible contraceptives |
| LARD | Los Angeles Racing Dragons |
| LBRP | London Bridge Raceway Park |
| LDR | Long Distance Race |
| LDR | Long Distance Racing |
| LFR | Leavine Family Racing |
| LGWC | Loving Grace Worship Center |
| LLOAR | Living Legends of Auto Racing (Daytona Beach, FL) |
| LM | LeMans |
| LMR | Late Model Racecraft |
| LMR | Lee Martin Racing |
| LMR | Look Mom Racing |