N19

N19 may refer to:

Roads

 * N19 road (Belgium), a National Road in Belgium
 * Route nationale 19, in France
 * N19 road (Ireland)
 * Nebraska Highway 19, in the United States

Other uses

 * N19 (Long Island bus)
 * Aztec Municipal Airport, in Aztec, New Mexico, United States
 * HMS Utmost (N19), a submarine of the Royal Navy
 * London Buses route N19
 * Nitrogen-19, an isotope of nitrogen
 * N19, a postcode district in the N postcode area