A90

A90 or A-90 may refer to:

• A-90 Orlyonok, a Soviet model of Ekranoplan
• A90 road, a road connecting Edinburgh and Fraserburgh (both in Scotland)
• A90 TRACON, an FAA Air Traffic Control facility in Merrimack, NH
• Austin A90 motor car, either the Austin Atlantic or Austin Westminster
• Autostrada A90, the orbital motorway that encircles Rome
• Conventional ampere, a unit of measurement, symbol A₉₀
• Dutch Defence, in the Encyclopaedia of Chess Openings
• Hanlin eReader A90, an ebook reader
• Samsung Galaxy A90 5G, smartphone released in 2019
• Toyota Supra ( A90 ), a sport car from Japanese Automaker, Toyota
• A-90, an entity from a Roblox game called DOORS