JNA Full Form. Full Meaning of JNA Find long form and abbreviation, slang or definition of JNA. What does JNA mean? What does JNA 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.