The acronym CERT (an acronym for Computer Emergency Response Team) may refer to:
- ACERT (U.S. Army)
- Air Force Computer Emergency Response Team
- ALCERT (Albania)
- APCERT (Asia-Pacific)
- ARCERT (Argentina)
- AusCERT (Australia)
- Boeing CERT (BCERT)
- Brunei CERT (BruCERT)
- CAIS (Brazil)
- CanCERT (Canada)
- CARnetCERT (Croatia)
- CERT AM (Armenia)
- CERT.at (Austria)
- CERT Australia (Australia)
- CERT.be (Belgium)
- CERT.Brazil (Brazil)
- CERTA (France)
- CERT-Bund (Germany)
- CERT-CNN (Spain)
- CERT-Difesa (Italy)
- CERT-EE (Estonia)
- CERT-EU (European Union)
- CERT-FI (Finland)
- CERT GOV PL (Poland)
- CERT-Hungary
- CERT-In (India)
- CERT-IST (France)
- CERT-IT (Italy)
- CERT LEXSI (France)
- CERT-MU (Mauritius)
- CERTNASK (Poland CERT Research and Academic Network)
- CERT-NL (Netherlands)
- CERT-PA (Italy)
- CERT Polska (Poland)
- CERT.PT (Portugal)
- CERT-RENATER (France)
- CERT-RO (The Netherlands)
- CERT-RUS (Germany)
- CERT-SE (Sweden)
- CERT Coordination Center
- China CERT (CNCERT/CC)
- CSIRTUK (United Kingdom)
- dCERT (Denmark)
- DefCERT (The Netherlands)
- DFN-CERT (Germany)
- DK CERT (Denmark)
- DoD CERT (U.S. Dept. of Defense)
- ESACERT (European Space Agency)
- FUNETCERT (Finland)
- GARR-CERT (Italy)
- GCC CERT (Gulf Coordination Council CERT)
- GCERT (Malaysia)
- GovCERT.au (Australia)
- GovCERT.ch (Switzerland)
- GovCERT.it (Italy)
- GOVCERT.NL (The Netherlands)
- GovCertUK (United Kingdom)
- GRNET CERT (Greece)
- GTCERT (Georgia Institute of Technology CERT)
- Hong Kong CERT (HKCERT/CC)
- HunCERT (Hungary)
- ICS-CERT (Industrial Control Systems Cyber Emergency Response Team)
- ID-CERT (Indonesian CSIRT)
- IRISS-CERT (Irish Reporting & Information Security Service)
- JPCERT Coordination Center
- CERT-KR (Korea CERT)
- KN-CERT (Korea National Computer Emergency Response Team)
- KPN-CERT (The Netherlands)
- KrCERT/CC (Korea)
- LITNET CERT (Lithuania)
- MODCERT (United Kingdom)
- mtCERT (Malta)
- MyCERT (Malaysia)
- NBSO (NIC BR Security Office Brazilian CERT)
- NorCERT (Norway)
- Organisation of the Islamic Conference-CERT (OIC-CERT)
- PakCERT (Pakistan)
- PIONIER-CERT (Poland)
- Q-CERT (Qatar)
- RU-CERT (Russia)
- SI CERT (Slovenia)
- SingCERT (Singapore)
- SWITCHCERT (Swiss Academic and Research Network CERT)
- TP CERT (Poland)
- TWCERT (Taiwan Computer Emergency Response Team/Coordination Center)
- TWNCERT (Taiwan National Computer Emergency Response Team)
- Thai CERT (Thailand)
- UKCERT (United Kingdom)
- UNAM-CERT (Mexico)
- UNINETTCERT (Norwegian Network for Research Education CERT)
- U.S. Computer Emergency Readiness Team
- VNCERT (Vietnam)
CERT teams coordinate responses to computer security incidents, assist sites in handling attacks, and educate network users about computer security threats and preventive practices.