NJS

NJS may refer to


 * National Jet Systems, an Australian airline
 * Nihon Jitensha Shinkōkai (Japan Keirin Association), now replaced by the JKA Foundation
 * Nairobi Japanese School
 * 'NaJin Black Sword' a South Korean professional League Of Legends team, sponsored by NaJin Corporation
 * Naval Justice School
 * New Jersey Southern Railroad
 * Nurmijärven Jalkapalloseura, Finnish football club
 * New jack swing