RGK

RGK may refer to:


 * RGK Foundation
 * RGK Mobile
 * RGK Center for Philanthropy and Community Service
 * RGK color space, see RG color space
 * Red Wing Regional Airport (FAA Code: RGK)
 * Gorno-Altaysk Airport (IATA Code: RGK)
 * Romano-Germanic Commission (Römisch-Germanische Kommission), a department of the German Archaeological Institute
 * RGK Entertainment Group
 * RGK Records
 * RGK Wheelchairs