RKK explained

RKK may refer to:

Groups, organizations

RKK Energia (ru|link=no|Ракетно-космическая корпорация «Энергия» им. С. П. Королёва|Raketno-kosmicheskaya korporatsiya «Energiya» im. S. P. Korolova|S.P. Korolev Rocket and Space Corporation Energia), a Russian manufacturer of spacecraft and space station components
Sweet Scent of Service (RKK; 2006–2011; fa|link=no|ائتلاف رايحه خوش خدمت|Etelaf Rayheh Khosh Khodamat), a conservative political group in Iran that supported president Mahmoud Ahmadinejad and his government
Reichskommissariat Kaukasien (RKK; 1942–1943; de|link=no|Reich Commissariat Caucasus), military occupation command planned for the Caucuses region by Germany in WWII; planning and preparation started but no occupation occurred
Reichskulturkammer (RKK; 1933–1945; de|link=no|Reich Chamber of Culture), German government agency
Revi Karunakaran Memorial Museum (RKK Museum), Alappuzha, Kerala, India; a private art museum
Ring Ka King, a pro-wrestling promotion in India
Risshō Kōsei Kai, a Japanese religious movement with an emphasis on the Lotus Sutra
Rooms-Katholiek Kerkgenootschap (RKK; nl|link=no|Roman Catholic Church Association), a broadcaster in the Netherlands
Rotterdamse Kunstkring (RKK), an artists association in Rotterdam, Netherlands
Runda Kumpulan Kecil, an insurgent group in Southern Thailand
RKK Kumamoto Broadcasting, a Radio and TV Station in Kumamoto, Japan