NKP

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.