RKK

RKK may refer to:
 * Rooms-Katholiek Kerkgenootschap, a broadcaster in the Netherlands
 * S.P. Korolev Rocket and Space Corporation Energia, also known as RKK Energiya, a Russian manufacturer of spacecraft and space station components
 * Reichskulturkammer
 * Risshō Kōsei Kai, a Japanese movement with an emphasis on the Lotus Sutra
 * Runda Kumpulan Kecil, an insurgent group in Southern Thailand
 * Robert Kenneth Kraft, American businessman
 * Kumamoto Broadcasting, a Radio and TV Station in Kumamoto, Japan