A5
A5, A05, A 5, A V or A-5 may refer to:
- A5 paper size, an ISO 216 international standard paper size (148 × 210 mm)
- A5 pod, a name given to a group of orcas (Orcinus orca) found off the coast of British Columbia, Canada
- Gibson A-5 mandolin, a Gibson mandolin
- Tippmann A-5, a semi-automatic pneumatic marker for playing paintball
- In Town and country planning in the United Kingdom, A5 is the code for permission to use specific land or premises for takeaways
- A5 grade (climbing)
- A5, an aid climbing gear manufacturer created by John Middendorf (absorbed by The North Face in 1997)
- A05, Réti Opening Encyclopaedia of Chess Openings code
- Bhutan aircraft registration code
- A5 Scooter Club based in Aldershot Hampshire.
- A5, the alternating group on five elements
- A5, the strain at fracture of a material as measured with a load test on a cylindrical body of length 5 times its diameter.
- An A-type main sequence star (A V)
Biochemistry and medicine
In transport
Automobiles
Transport
In the military
Aircraft
- A-5 Fantan, an export version of Nanchang Q-5, a Chinese-built jet fighter bomber
- Curtiss Falcon or A-5 Falcon, an attack aircraft manufactured by the Curtiss Aircraft Company
- Mitsubishi A5M, a 1930s Japanese fighter plane
- A-5 Vigilante, a carrier-based supersonic bomber designed for the United States Navy
- Focke-Wulf A 5, a WWI German Focke-Wulf aircraft
Others
Computing and communications
- Apple A5, an upgrade of the A4 microprocessor; used in Apple's iPad 2 and iPhone 4S.
- A5 a Chinese clone mobile phone of Xperia X10
- A5/1, A5/2 and A5/3, ciphers used in cellular phones