An abacus is a counting frame.
Abacus may also refer to:
Companies and brands Abacus Federal Savings Bank, an overseas Chinese bank in the US Abacus: Small Enough to Jail, 2016 documentary about the bank, which was the only financial institution to face criminal charges following the subprime mortgage crisis Abacus Data, a Canadian polling firm Abacus (imprint), an imprint of Little, Brown and Company Abacus Recordings, a defunct imprint of Century Media Records Abacus Jasper's Management Group, owned by chef Kent Rathbun
Other uses Abacus (architecture), a flat slab forming the uppermost member or division of the capital of a column Abacus (journal), a peer-reviewed academic accounting journal Abacus school, a type of Renaissance-era Italian trade school Logical abacus, an early mechanical digital computer Mental abacus, a system involving visualization of an abacus to carry out arithmetical calculations Abacus Harmonicus, an ancient diagram showing the structure and placement of the keys of a particular musical instrument Operation Abacus, the Canadian military operation to restore vital services if the year 2000 caused disruption
es:Ábaco (desambiguación) eo:Abako eu:Abako (argipena) fr:Abaque gl:Ábaco (homónimos) io:Abako (homonimo) it:Abaco (disambigua)