J30

J30 may refer to:

Vehicles

Automobiles

• Honda J30, an automobile engine
• Infiniti J30, a Japanese luxury car
• Nissan J30, a Japanese sedan
• Toyota Land Cruiser (J30), a Japanese off-road vehicle

Boats

• J/30, keelboat

Locomotives

• GSR Class J30, an Irish steam locomotive

Other uses

• Pentagonal orthobicupola, a Johnson solid (J₃₀)
• Rhinitis
• Westinghouse J30, a turbojet engine
• J30 index, a stock index tracking the Tokyo Stock Exchange