Series 90

Series 90 may refer to:

Aircraft

 * Express Series 90, an American homebuilt aircraft design

Computing

 * UNIVAC Series 90, mainframe computers
 * Series 90 (software platform), a platform for mobile phones that uses Symbian OS
 * UNIVAC Series 90, line of mainframe computers

Trains

 * JNR 90 series, prototype of JNR 101 series electric multiple unit