- YSAS stands for Youth Substance Abuse Service
- YSAS stands for Yaw Stability Augmentation System (aviation)
- YSAS stands for Young Sikh Association Singapore
- YSAS stands for Young Scientist Award Session (Society for Experimental Biology; UK)
- YSAS stands for Yanmar Sales and After Sales Services
- YSAS stands for Young Society Against Swearing
Abbreviations And Their Meaning