NKP may refer to: The abbreviation and identifying marks of the Nickel Plate Road NetKernel Protocol New Korea Party, a political party in South Korea New Komeito Party, a Japanese political party New York, Chicago and St. Louis Railroad, the Nickel Plate Road Communist Party of Norway (Norges Kommunistiske Parti) Nakhon Phanom Royal Thai Air Force Base, which was used by the United States Pacific Air Forces during the Vietnam War Nitrogen, Potassium, and Phosphorus, three essential plant nutrients.