- YNA Yazaki North America (Canton, MI)
- YNA You’re Not Alone
- YNA Yellow Naped Amazon (bird species; Amazona ochrocephala auropalliata)
- YNA Yacht Naval Architects (Hamburg, Germany)
- YNA Young Numismatists of America
- YNA Yeshivat Netiv Aryeh (Jarusalem, Israel)
- YNA Young Naturalists Awards
- YNA York Neurosurgical Associates, PC
YNA