J30

J30 may refer to :

• GSR Class J30, an 1875 Irish class of 0-6-0T steam locomotive
• Honda J30, a 3-liter engine
• Infiniti J30, a 1992 rear wheel drive luxury car
• Westinghouse J30, a predecessor of the 1940 Westinghouse J34 turbojet engine
• J/30, a sailing keelboat designed by J Boats, Inc.

and also :

• Vasomotor and allergic rhinitis ICD-10 code
• J30 index, a Japanese Tokyo Stock Exchange index composed on the larger Japanese industrial companies