Cert is most commonly short for certificate or certification, see Certificate (disambiguation).
Cert or CERT may also refer to:
- Certiorari, a Latin legal term for a court order requiring judicial review of a case
- Certiorari before judgment, a specific form of a writ of certiorari
- Cert pool, shorthand term for the pool of applicants for a writ of certiorari from the United States Supreme Court
- Carbon Emission Reduction Target, a United Kingdom government initiative
- Correctional Emergency Response Team, a team of correction officers
- Council of Energy Resource Tribes, a consortium of tribes to establish tribal control over natural resources
- Computer emergency response team, an expert group that handles computer security incidents
- CERT Coordination Center, the world-wide center for coordinating information about Internet security at Carnegie Mellon University, the first and most well-known CERT
- United States Computer Emergency Readiness Team (US-CERT), the United States Computer Emergency Readiness Team
- CERT Group of Companies, a private education provider in the Middle East
- Community emergency response team, teams of volunteer emergency responders across the United States
- Constant extension rate tensile testing, a standard method of testing of materials, also known as slow strain rate testing