90

90 may refer to:
 * 90 (number)
 * one of the years 90 BC, AD 90, 1990, 2090, etc.
 * 90 (album), an album by the electronic music group 808 State
 * 90 (EP), an album by the band South Club
 * Atomic number 90: thorium
 * 90 Antiope, double asteroid in the outer asteroid belt

Vehicles

 * Audi 90, a compact executive car produced by Audi
 * Saab 90, a compact executive car produced by Saab
 * Tatra 90, a prototype mid-size car
 * Alfa Romeo 90, an executive car produced by Alfa Romeo
 * Rover 90, a saloon produced by the Rover Company