RRK

RRK may refer to:


 * Rahsaan Roland Kirk (1935-1977), American jazz multi-instrumentalist
 * Revised Romanization of Korean, the Korean language romanization system of South Korea
 * R. R. Keshavamurthy (1913-2006), Indian violinist
 * Reinhard Rudolf Karl Hartmann, lexicographer and linguist
 * Rice–Ramsperger–Kassel theory of chemical reactions, a precursor to RRKM theory