What is A (disambiguation)?
'''[[A]]''' is the first letter of the alphabet. It may also refer to: *In English, it is one of the two [[article (grammar)|indefinite articles]], the other being ''an''. * In measurement, A is a symbol for [[area]]. * In medicine, A is one of the human [[blood type]]s. * In music, A is a [[Note (music)|note]]. * In the International System of Units, A is the symbol for the [[ampere]] (which is also shortened to ''amp''). * In school, an A+ is the highest [[Grade (education)|grade]] you can get, with an A being the grade below. * In transport, A is the international license plate code for [[Austria]]. *In the New York Stock Exchange, A is the symbol for [[Agilent Technologies]]. *In the Cyrillic Script, [[A (Cyrillic)|А]] is the first letter. *[[Ampere]], a unit of electric current {{disambig}}