FACS or FaCS may refer to
Organizations
- Department of Family and Community Services (Australia)
- Department of Family and Community Services (New South Wales), Australia
- Family and Community Services (South Australia), Australia
- First Assembly Christian School, in Memphis, Tennessee, US
- BCS-FACS, a British Computer Society Specialist Group for Formal Aspects of Computing Science
Science and technology
- Fluorescence-activated cell sorting, applied in flow cytometry
- Facial Action Coding System, to systematically describe human facial expressions
- Families and Children Study, a longitudinal study in Great Britain