- YNS stands for Yayasan Negeri Sembilan (Malaysian hockey league)
- YNS stands for Yellow Nail Syndrome
- YNS stands for York Nomad Society
- YNS stands for Young Naperville Singers (est. 1984; Naperville, IL)
- YNS stands for YMCA (Young Men’s Christian Association) of the North Shore (Massachusetts)
- YNS stands for Young Non-Smokers (smoking research)
YNS