- YSU stands for Yerevan State University
- YSU stands for Youngstown State University
- YSU stands for Yanshan University (China)
- YSU stands for York Simpson Underwood (real estate firm; North Carolina)
- YSU stands for Yonsei University (South Korea)
- YSU stands for Yakutsk State University (Russia)
- YSU stands for Youth Service Unit (various locations)
- YSU stands for Yokohama Shosen Unyu (Japan)
YSU