OBL

OBL or ÖBL may refer to:

Basketball

 * Obol Basketball League, former name for the Swedish Basketball League
 * Orlen Basket Liga, the Polish Basketball League name from 2023
 * Österreichische Basketball Bundesliga, the top basketball league in Austria

Other

 * Osama bin Laden (1957–2011), founder of the al-Qaeda militant organization
 * Zoersel-Oostmalle Airfield, Belgium (IATA code)
 * Oblique case, a grammatical case
 * Obligate wetland plant, a wetland indicator status
 * Österreichisches Biographisches Lexikon 1815–1950, a biographical dictionary of individuals who've contributed to the history of Austria
 * One Bank Limited, a Bangladeshi bank
 * Oblo language of northern Cameroon (ISO 639-3 code: obl)