A18
# A18

A18 or A-18 is a three-character acronym that may refer to:

* A18 road (disambiguation), in several countries
* A-18 Shrike, a Curtiss Model 76A twin radial engine monoplane service test aircraft of the mid-1930s
* Aero A.18, a Czech fighter aircraft built in the 1920s
* Arrows A18, a Formula One car
* British NVC community A18 (Ranunculus fluitans community), a plant community
* Cunninghamella A18, a fungus strain
* A18, one of the Encyclopaedia of Chess Openings codes for the English Opening in chess
* Subfamily A18, a rhodopsin-like receptors subfamily
* F/A-18 Hornet, an all-weather carrier-based strike fighter designed to fill the roles of fighter aircraft and attack aircraft
* Station number of Toei Subway Asakusa station
