- YDAC stands for York-Durham Aphasia Centre (Whitchurch-Stouffville, Ontario, Canada)
- YDAC stands for Youth Drug and Alcohol Court (Australia)
- YDAC stands for Yohkoh Data Archive Centre (est. 1994; UK)
- YDAC stands for Youth Development Apprenticeship Centres (Trinidad & Tobago)
YDAC