J19

J19 may refer to:

Roads

• County Route J19 (California)
• Johor State Route J19, in Malaysia

Vehicles

Locomotives

• GSR Class J19, an Irish steam locomotive
• LNER Class J19, a British steam locomotive class

Ships

• HSwMS Småland (J19), a Halland-class destroyer of the Swedish Navy
• INS Nirdeshak (J19), a Sandhayak-class survey ship of the Indian Navy

Other uses

• J19 (journal), a scholarly journal
• Elongated square cupola, a Johnson solid (J₁₉)