NCA
NCA is an abbreviation for:
- N- carboxy anhydrides, an important class of monomers for synthesis of polypeptides
- Namibia Commercial Aviation, a Namibian airline, based in Windhoek
- National Coffee Association of USA, the trade and lobbying association of the coffee industry in the U.S.
- National Command Authority, the highest military command of the United States
- Nautic Club Austria, Graz, a sailing club
- Nicaragua, a country in Central America, an Olympic country code
- Nippon Cargo Airlines, a Japanese cargo carrier
- Non Compartmental Analysis, a type of evaluation of pharmacokinetic data
- Disambiguation
- Abbreviation