A50

A50, A.50 or A-50 may refer to :
* A50 autoroute, a French motorway
* A50 road, a major British road
* Beriev A-50, a Russian airborne early warning aircraft
* Fiat A.50, a 1928 Italian seven-cylinder, air-cooled radial engine for aircraft
* iShares FTSE/Xinhua A50 China Tracker (A50 China Tracker), a sub-fund of the iShares Asia Trust
* Junkers A50, a German sports plane of 1930s

and also :
* a variant of KAI T-50 Golden Eagle aircraft
* a caesium-containing additive to the JP-7 fuel
* Quebec Autoroute 50, a Canadian highway