JLS are a British 4-piece boyband.
JLS may also refer to: Jamie Lynn Spears, Britney Spears' sister JLS (album), an album by JLS .jls, an extension for Lossless JPEG files Jane Lathrop Stanford Middle School, a middle school in Palo Alto, California Jane Lathrop Stanford Jack London Square, a neighborhood in Oakland, California Jarcho-Levin Syndrome Journal of Libertarian Studies, a scholarly journal published by the Ludwig von Mises Institute and Lew Rockwell The Java Language Specification, the specification for the programming language Java.