| Acronym | Definition |
|---|
| JLS | Jack the Lad Swing (Xfactor group) |
| JLS | Java Language Specification |
| JLS | Jane Lathrop Stanford (California) |
| JLS | Journal of the Lepidopterists' Society |
| JLS | Juntas Locales de Seguridad (Spanish: Local Boards Security; various locations) |
| JLS | Judith Lee Stronach (University of California, Berkeley) |
| JLS | Junior League of Springfield |
| JLS | Junior League of Seattle |
| JLS | Jini Lookup Service |
| JLS | Journal of Legislative Studies |
| JLS | Junior League of Sacramento |
| JLS | Junior League of Summit |
| JLS | Junior League of Sarasota |
| JLS | Junior League of Syracuse |
| JLS | Junior League of Savannah |
| JLS | Jesus Loves Sinners (pop group) |
| JLS | Japanese Language System |
| JLS | Just Little Sausages |