Aba may refer to:
Abalone (/ˈæbəloʊniː/ or /ˌæbəˈloʊniː/; via Spanish abulón, from the Rumsen language aulón) is a common name for any of a group of small to very large sea snails, marine gastropod molluscs in the family Haliotidae.
The abacus (plural abaci or abacuses), also called a counting frame, is a calculating tool that was in use in Europe, China and Russia, centuries before the adoption of the written Hindu–Arabic numeral system and is still used by merchants, traders and clerks in some parts of Eastern Europe, Russia, China and Africa.
Abandonware is a product, typically software, ignored by its owner and manufacturer, and for which no product support is available.
The ABA League JTD, commonly known as the Adriatic League, is a regional professional basketball league that originally featured clubs from the former Yugoslavia (Bosnia and Herzegovina, Croatia, Macedonia, Montenegro, Serbia and Slovenia).
Abarth & C. S.p.A. is a racing car and road car maker founded by Italo-Austrian Carlo Abarth in 1949. Its logo is a shield with a stylized scorpion on a red and yellow background.
ABAP (Advanced Business Application Programming, originally Allgemeiner Berichts-Aufbereitungs-Prozessor, German for "general report creation processor") is a high-level programming language created by the German software company SAP SE.
Abahlali baseMjondolo (Zulu pronunciation: [aɓaˈɬali ɓasɛm̩dʒɔˈndɔːlo], Shack Dwellers), also known as AbM or the red shirts, is a shack-dwellers' movement in South Africa which is well known for its campaigning against evictions and for public housing.
Abadan (Persian: آبادان Ābādān) is a city in and the capital of Abadan County, Khuzestan Province which is located in central west of Iran.
The Associação Brasileira de Apoio e Desenvolvimento da Arte-Capoeira (ABADÁ-Capoeira), in English translated as "The Brazilian Association for the Support and Development of the Art of Capoeira," is a nonprofit organization whose purpose is to spread and support Brazilian culture through the practice of capoeira.