| Abbreviation | Definition |
|---|---|
| JASA | Jacksonville Area Soccer Association |
| JASL | Jurupa Adult Soccer League |
| JBSC | James Bede Soccer Club |
| JBSC | Jensen Beach Soccer Club |
| JCSA | Jersey City Soccer Association |
| JCSC | Jefferson County Soccer Club |
| JSL | Japan Soccer League |
| JSS | Just Say Soccer |
| JSSL | Junior Soccer School and League |
| JUSC | Johnston Urbandale Soccer Club |
| KASA | Kimberly Area Soccer Association |
| KDSL | Kitchener and District Soccer League |
| KGB | Kolpings Glorie Blijft Soccer club, The Netherlands |
| KHSC | Kings Hammer Soccer Club |
| KICS | Kids In Centerville Soccer |
| KMSL | Kansas Missouri Soccer League |
| KMSL | Kansas, Missouri Soccer League |
| KMSL | KANSAS/MISSOURI SOCCER LEAGUE |
| KMSL | Kettle Moraine Soccer League |
| KMSL | Knoxville Metro Soccer League |