J19

J19 may refer to :

• County Route J19 (California), a County route in California
• HMS Småland (J19), a 1952 Swedish Navy Halland-class destroyer
• MGWR Class J19, a Midland Great Western Railway Irish steam locomotive
• S/2003 J 19, a natural satellite of Jupiter
• J19: The Journal of Nineteenth-Century Americanists, a scholarly journal