SSAC may refer to:
- Scottish Sub Aqua Club, a scuba training association
- Social Security Advisory Committee, an advisory body to the United Kingdom government on social security issues.
- Society for the Study of Architecture in Canada, an architectural history organization in Canada, established in 1974.
- Southern States Athletic Conference, a NAIA athletic conference in the United States.
- Security and Stability Advisory Committee, a body that advises ICANN on the security and stability of the Internet.