N15

N15 may refer to:

Roads

 * N15 road (Belgium), a National Road in Belgium
 * Route nationale 15, in France
 * N15 road (Ireland)
 * A15 motorway (Netherlands)
 * Nebraska Highway 15, in the United States

Vehicles

 * HMS Triton (N15), a submarine of the Royal Navy
 * LNER Class N15, a British 0-6-2 steam locomotive class
 * LSWR N15 class, a British 4-6-0 steam locomotive
 * Nissan Almera (N15), a Japanese automobile sold in Europe
 * Nissan Pulsar (N15), a Japanese automobile sold domestically

Other uses

 * N15 (Long Island bus), New York
 * Enterobacteria phage N15
 * Kingston Airport (Nevada), in Lander County, Nevada, United States
 * London Buses route N15
 * Nitrogen-15, an isotope of nitrogen
 * Tonga language (Malawi)
 * N15, a postcode district in the N postcode area