JCJ

JCJ may refer to:


 * J. C. J. Kimaro, commander of the Kenyan Navy
 * JCJ Architecture, formerly Jeter, Cook & Jepson, an architecture firm; see Foxwoods Resort Casino
 * JCJ Vanderheyden (1928–2012), Dutch painter and photographer
 * Jean-Claude Juncker (born 1954), Luxembourgish prime minister and president of the European Commission
 * Journal of Criminal Justice, a bimonthly peer-reviewed academic journal