- YLS stands for Yale Law School
- YLS stands for Young Lawyers Section
- YLS stands for Youth Leadership Summit (New York, NY)
- YLS stands for Your Little Sister
- YLS stands for Yale Law Student
- YLS stands for Your Life Study
- YLS stands for Young Lyrical Soldiers (band)
- YLS stands for Young Lochend Shamrock (gang; Edinburgh, Scotland, UK))
YLS