A40 or A-40 may refer to:

Roads

• A40 motorway (Canada), a road in Qu bec
• A40 motorway (France)
• A40 motorway (Germany)
• A40 road (Great Britain), a road connecting London and Fishguard, Wales
• A40 road (Isle of Man), a primary road which connects the A3 with the A1

Other

• Antonov A-40, an aircraft
• Austin A40 and Innocenti A40, a car from the British Motor Corporation and its Innocenti version
• Beriev A-40, an aircraft

See also

• List of highways numbered 40

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