What does CJM mean? Chief Judicial Magistrate (CJM), is the administrative in each District as per Code of Criminal Procedure in India Criminal Judicial system. Looking for the definition of CJM? Find out what is the full meaning of CJM on Abbreviations. What does CJM mean? Get the full information of CJM acronym / abbreviation / slang definitions at AcronymsandSlang. Full form of CJM is “Chief Judicial Magistrate”.