title: Type 31
text: # Type 31
  
  Type 31 may refer to:
  
  * Type 31 frigate, a class of Frigate currently being built for the Royal Navy
  * Type 31 75 mm mountain gun, a field gun of the Imperial Japanese Army
  * a version of the M2 mortar produced in the Republic of China
  * Type 31 Grampus I, a variant of the Bristol Grampus, an early British prototype aircraft
  * Villiers 31, an early French passenger aircraft
  * Tupolev Tu-85, a Soviet prototype aircraft, designated as Type 31 by the US Air Force
  * Hispano-Suiza Type 31, an early Spanish aircraft engine
  * Peugeot Type 31, an early French motor vehicle
  * an early Datsun motor vehicle
  * Type 31 Alphabetical Duplicating Punch, an IBM keypunch
  