VNO

VNO may mean:


 * VNÖ (Verband der Naturparke Österreichs), the Association of Austrian Nature Parks
 * VNO speed, the maximum safe cruise speed of an aircraft
 * Vilnius International Airport, Lithuania, IATA code
 * Virtual network operator, a network service provider that does not own telecoms infrastructure
 * Vomeronasal organ, an auxiliary olfactory sense organ in some tetrapods
 * Vornado Realty Trust, a real estate investment trust