N23

N23 may refer to:

Roads

• N23 road (Belgium)
• Route nationale 23, in France
• N23 road (Ireland)
• Nebraska Highway 23, in the United States

Other uses

• N23 (Long Island bus)
• Escadrille N23, a squadron of the French Air Force
• Nieuport 23, a French First World War fighter
• Nitrogen-23, an isotope of nitrogen
• Northrop N-23 Pioneer, an American transport aircraft
• Sidney Municipal Airport (New York), in Delaware County, New York, United States