Formalin-Acetic acid-Alcohol, a preservative used for preserving botanical specimens (formalin 5%, acetic acid 5%, ethyl alcohol 90%)

Federal Aviation Administration, a United States government agency

Fragment Anti-Aliasing, a anti-aliasing technique.

Fuerza Aérea Argentina, the Argentine air force

Federal Arbitration Act, a United States federal law

The Fellows of the Australian Academy of Science.

Federación Agraria Argentina, an Argentine agrarian workers' trade union

Federal Analog Act, a law banning designer drugs

Fetch-and-add, a special CPU instruction that atomically modifies the contents of a memory location

Fleet Air Arm, part of the United Kingdom's Royal Navy