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 , a Halland-class destroyer of the Swedish Navy , a Sandhayak-class survey ship of the Indian Navy

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