A20

A20, A 20, A.20 or A-20 may refer to:

Vehicles

A-20 Havoc, a U.S.-designed attack aircraft used in World War II
A20 heavy tank, a British tank which did not enter production but of which a downsized version became the A22 Churchill tank
A-20 tank, one of the prototypes of Soviet T-34 tank
Aero A.20, a Czech fighter plane
Arrows A20, a race car
Fiat A.20, an engine powering the 1925 Italian Ansaldo A.120 aircraft
Focke-Wulf A 20, a 1927 German airliner
JAC Heyue A20, a subcompact car
Junkers A 20, a predecessor of the Junkers A 35 aircraft

A20 cell line, a cell line.
A20 line, an address line on the system bus of x86 processors
University of Aberdeen (UCAS institution code)
British NVC community A20 (Ranunculus peltatus community), a plant community
Dance Dance Revolution A20, the latest version of Konami's arcade rhythm game series
English Opening (Encyclopedia of chess openings code)
List of A20 roads
Oshiage Station (station code), a train station in Sumida, Tokyo, Japan
Samsung Galaxy A20, smartphone released in 2019
TNFAIP3 or A20, a zinc finger protein that inhibits NF-kappa B activation
A-20, a character in the Japanese .hack//Sign anime, whose voice is given by Atsuko Enomoto