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
The Shenyang FC-31 Gyrfalcon ( zh, s=鹘鹰, p=Gǔ yīng), also known as the J-31 is a Chinese prototype mid-sized twinjet 5th-generation fighter aircraft developed by Shenyang Aircraft Corporation (SAC). The official nickname published by SAC ...
, 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
In geometry, the pentagonal gyrobicupola is one of the Johnson solids (). Like the pentagonal orthobicupola (), it can be obtained by joining two pentagonal cupolae () along their bases. The difference is that in this solid, the two halves are ...
, a Johnson solid (J
31)
*
Rhinitis
{{Letter-NumberCombDisambig
