- Cystatin 5 (CST5)
- Cystatin 6 (CST6)
- Cystatin 7 (CST7)
- Cystatin 8 (CST8)
- Cystatin 11 (CST11)
- Cystatin 1 (CST1)
- Centrosome And Spindle Pole Associated Protein 1 (CSPP1)
- Casein Kappa (CSN3)
- Casein Beta (CSN2)
- Casein Alpha (CSN1)
- Chorionic Somatomammotropin Hormone Like Protein 1 (CSHL1)
- Cold Shock Domain Protein A (CSDA)
- Cartilage Associated Protein (CRTAP)
- Cone Rod Homeobox Protein (CRX)
- Cartilage Acidic Protein 1 (CRTAC1)