Abbreviations
- "Underwater Breathing Apparatus", some types of rebreather scuba set. For early British UBA's see Siebe Gorman CDBA.
- Union Belge De L'Automatique, the Belgian branch of EUROMAT
- Unit of Binding Atoms
- United Bank for Africa, an International bank with headquarters in Lagos, Nigeria
- United Bank of Albania
- United Battlefield Association
- Universal Boxing Association
- Universal Business Adapter
- Universidad de Buenos Aires, also known as "University of Buenos Aires", in Argentina
- Royal Union of Belgian Radio Amateurs
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