J31

J31, J.31 or J-31 may refer to:

Vehicles British Aerospace Jetstream J31, a British airliner Nissan Teana J31, a Japanese sedan , a Makar-class survey ship of the Indian Navy Shenyang J-31, a Chinese fighter jet LNER Class J31, a class of British steam locomotives

Other uses General Electric J31, an American jet engine Ground Equipment Facility J-31, a former radar station in California Malaysia Federal Route J31 Pentagonal gyrobicupola, a Johnson solid (J31) Rhinitis