RKM or rkm can refer to:Ramakrishna Mission, Hindu religious organization Reichskommissariat Moskowien RKM, the ISO 639-3 code for the Marka language RKM, alias for Rulla Kelly-Mansell, in the Australian hip hop duo MLRN x RKM R.K.M & Ken-Y, a Puerto Rican reggaeton duo RKM code, for resistor and capacitor values Rotary Piston Machine