ULB

ULB may refer to:


 * the IATA code for Ulei Airport in Ulei, Vanuatu
 * "Ultralight Beam", a song by American hip hop artist Kanye West
 * Underwater locator beacon, a device fitted to aviation flight recorders
 * Free University of Brussels (Université libre de Bruxelles), a university in Belgium between 1834 and 1969
 * Université libre de Bruxelles, a university in Belgium from 1970 onwards
 * Urban local body, a representative body in India