JLS (disambiguation)

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
 * 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.