- Copula. Encyclopedia of Biometrics 2009: 203
- Core. Encyclopedia of Biometrics 2009: 203
- Correct Index Power. Encyclopedia of Biometrics 2009: 203
- Correct Reject Power. Encyclopedia of Biometrics 2009: 203
- Correlation. Encyclopedia of Biometrics 2009: 204
- Correlation Map. Encyclopedia of Biometrics 2009: 204
- Correspondence. Encyclopedia of Biometrics 2009: 204
- Cost Function. Encyclopedia of Biometrics 2009: 204
- Counter Sign. Encyclopedia of Biometrics 2009: 204-205
- Countermeasures. Encyclopedia of Biometrics 2009: 204
- Covariate. Encyclopedia of Biometrics 2009: 205
- Covariate Studies. Encyclopedia of Biometrics 2009: 205
- Craniofacial Reconstruction. Encyclopedia of Biometrics 2009: 205
- Craniofacial Superimposition. Encyclopedia of Biometrics 2009: 205
- Credential Hardening. Encyclopedia of Biometrics 2009: 205
- Credentialing System. Encyclopedia of Biometrics 2009: 206
- Credit Check. Encyclopedia of Biometrics 2009: 206
- Crew Designs. Encyclopedia of Biometrics 2009: 206
- Criminal History Check. Encyclopedia of Biometrics 2009: 206
- Criminal Law Enforcement. Encyclopedia of Biometrics 2009: 206
- Criminal Record Search. Encyclopedia of Biometrics 2009: 206
- Cross-Modality Face Biometrics. Encyclopedia of Biometrics 2009: 206
- Cross-Validation. Encyclopedia of Biometrics 2009: 206
- Cryptography. Encyclopedia of Biometrics 2009: 206-207
- Curse of Dimensionality. Encyclopedia of Biometrics 2009: 207
- Curse of Misalignment. Encyclopedia of Biometrics 2009: 207
- Cursive. Encyclopedia of Biometrics 2009: 207
- Custody Suite. Encyclopedia of Biometrics 2009: 207
- Cut Finger Problem. Encyclopedia of Biometrics 2009: 207