JLB

JLB may refer to:


 * Jewish Lads' Brigade, a Jewish youth organisation
 * Johann Ludwig Bach, German composer of the Bach family – specifically the catalogue of compositions of this composer uses the abbreviation JLB
 * John Logie Baird, Scottish inventor
 * Jorge Luis Borges, an Argentinian author
 * Journal of Leukocyte Biology, a medical journal
 * Long Beach Heliport, USA (by IATA code)
 * WJLB, a radio station in Detroit, USA
 * PT Jakarta Lingkar Baratsatu, a company operating the Jakarta Outer Ring Road
 * JLB Credit, a fictional credit company from the British sitcom Peep Show