| Abbreviation | Definition |
|---|---|
| KMFL | Kittatinny Midget Football League |
| KNFL | Korea National Football League |
| KNFL | Korean National Football League |
| KPFC | Keilor Park Football Club |
| KSAFA | Kingston and St Andrew Football Association |
| KSAFA | Kingston St Andrew Football Association |
| KSFA | Karnataka State Football Association |
| KSFA | Kent Schools Football Association |
| KUFC | Karachi United Football Club |
| KYF | Kauai Youth Football |
| LAFC | Los Angeles Football Club |
| LAR | Los Angeles Rams |
| LASP | Longhorn All-Sports Package (UT tickets) |
| LCFC | Liverpool County Football Combination |
| LCYF | Lake County Youth Football |
| LCYF | Lower Columbia Youth Football |
| LDFA | Lithgow District Football Association |
| LFA | Lakeville Football Association |
| LFAF | Latvian Federation of American Football |
| LFAI | Ladies Football Association Of Ireland |