OBL or ÖBL may refer to:

• 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

• 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)

This disambiguation page lists articles associated with the title OBL.
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