E19

E19 may refer to:
 * Chūō Expressway (between Komaki JCT and Okaya on main route) and Nagano Expressway, route E19 in Japan
 * European route E19
 * HMS E19, a submarine
 * Queen's Indian Defense, Encyclopaedia of Chess Openings code
 * Sungai Besi–Ulu Klang Elevated Expressway, route E19 in Malaysia