Q class

Q Class or Class Q may refer to:

Rail transport

 * GNRI Class Q, a Great Northern Railway of Ireland locomotive class
 * NZR Q class (1878), a New Zealand Railways locomotive class
 * NZR Q class (1901), a New Zealand Railways locomotive class
 * SR Class Q, a British Southern Railway locomotive class
 * WAGR Q class (diesel)
 * Q-class Melbourne tram

Other uses

 * Library of Congress Classification:Class Q -- Science
 * Q-class destroyer, a class of warships used by the Royal Navy, Royal Netherlands Navy, and Royal Australian Navy
 * Classical Quarterly, abbreviated Class. Q.