J2J Full Form. Full Meaning of J2J Find long form and abbreviation, slang or definition of J2J. What does J2J mean? What does J2J stand for? We are providing world largest and most comprehensive acronyms, names, abbreviations database directory on the Internet. Our data base contains more than 8,00,000 terms abbreviations and acronyms. You can also search unique terms more than 4,00,000 general Comprehensive words.