FACS or FaCS may refer to

• Department of Family and Community Services (Australia), an Australian Government department (1998–2006)
• Family and Community Services (South Australia), a former South Australian Government agency
• New South Wales Department of Family and Community Services, a former New South Wales Government Department (2011–2019)

• First Assembly Christian School, Memphis, Tennessee
• Formal Aspects of Computing Science, a British Computer Society Specialist Group

• Fellow of the Australian Computer Society
• Fellow of the American College of Surgeons

• Fluorescence-activated cell sorting, applied in flow cytometry
• Facial Action Coding System, a procedure to systematically describe human facial expressions (successfully adapted for several other species)
• Families and Children Study, a longitudinal study in Great Britain

• Family and consumer science, a field of study that deals with the economics and management of the home, family and community

• All pages with titles beginning with FACS
• All pages with titles containing FACS