- YEC stands for Yamaha Electronics Corporation
- YEC stands for Young Earth Creationist
- YEC stands for Yaskawa Electric Corporation (est. 1915; various locations)
- YEC stands for Youth Evangelism Conference
- YEC stands for Youth Environment Council (Australia)
- YEC stands for Yokogawa Electric Corporation
- YEC stands for Youth Empowerment Center (Oakland, CA)
- YEC stands for Yorkshire Engine Co (UK)
- YEC stands for Yechon, South Korea – Yechon (Airport Code)
- YEC stands for Older Youth Earnings Change
YEC