NNR (disambiguation)

NNR may refer to:


 * National nature reserve, an area protected by a nation to preserve wildlife etc.
 * Nishi-Nippon Railroad, a railway company in Japan
 * North Norfolk Railway, a heritage railway in England
 * Naturally Nutrient Rich, a rating system for the nutritional content of food
 * National Nuclear Regulator of South Africa
 * Connemara Airport, Ireland (IATA code: NNR)