JBO may refer to: JBO (band), a German heavy metal band Jay Bouwmeester (born 1983), Canadian professional ice hockey player Jean-Baptiste Ouédraogo, President of Upper Volta from November 1982 until August 1983 Jerusalem Bird Observatory, Israel Jodrell Bank Observatory, UK Junior Boy's Own, a record label Junk Bond Observatory Lojban (ISO 639 code: jbo), a constructed language