A25
A25, A 25 or A-25 may refer to:

Aero A.25, a Czech military training aircraft of the 1920s
HLA-A25, an HLA-A serotype
Junkers A 25, a German two-seater cantilever monoplane
Article 25, a UK development and disaster relief charity
A25 accident report form formerly used by the Fleet Air Arm and featured in a World War II song

See also
English Opening in the Encyclopaedia of Chess Openings
Curtiss A-25 Shrike, a World War II dive bomber variant of SB2C Helldiver
List of highways numbered 25

Roads
List of A25 roads