ASY or Asy may mean:
Asymmetric warfare (or asymmetric engagement) is war between belligerents whose relative military power differs significantly, or whose strategy or tactics differ significantly.
In analytic geometry, an asymptote (/ˈæsɪmptoʊt/) of a curve is a line such that the distance between the curve and the line approaches zero as they tend to infinity.
Asynchronous transfer mode (ATM) is, according to the ATM Forum, "a telecommunications concept defined by ANSI and ITU (formerly CCITT) standards for carriage of a complete range of user traffic, including voice, data, and video signals".
The United States recognizes the right of asylum of individuals as specified by international and federal law.
Asymmetric hydrogenation is a chemical reaction that adds two atoms of hydrogen preferentially to one of two faces of an unsaturated substrate molecule, such as an alkene or ketone.
An asylum seeker (also rarely called an asylee) is a person who flees his or her home country, 'spontaneously' enters another country and applies for asylum, i.e.
In computer science, asynchronous I/O, or "Non-sequential I/O" is a form of input/output processing that permits other processing to continue before the transmission has finished.
Asyut (Arabic: أسيوط Asyūṭ pronounced [ʔɑsˈjuːtˤ], Coptic: ⲥⲓⲟⲟⲩⲧ Siowt) is the capital of the modern Asyut Governorate in Egypt, which has one of the largest Coptic Catholic bishopric churches in the country; the ancient city of the same name, which is situated nearby.
Asylum is the fifth studio album by American metal band Disturbed. Asylum is meant to take a fresh direction in the band's music career, while remaining consistent with the band's previous albums.