- Cytidine Monophosphate Kinase 1 (CMPK1)
- Cytidine Monophosphate-N-Acetylneuraminic Acid Synthetase (CMAS)
- Citrate Lyase Beta Like Protein (CLYbL)
- CDC Like Kinase 4 (CLK4)
- CDC Like Kinase 3 (CLK3)
- CDC Like Kinase 2 (CLK2)
- CDC Like Kinase 1 (CLK1)
- Ceramide Kinase Like Protein (CERKL)
- Ceramide Kinase (CERK)
- Cyclin Dependent Kinase Like Protein 3 (CDKL3)
- Cyclin Dependent Kinase Like Protein 2 (CDKL2)
- Cyclin Dependent Kinase Like Protein 1 (CDKL1)
- CDP Diacylglycerol Inositol-3-Phosphatidyltransferase (CDIPT)
- CDC42 Binding Protein Kinase Alpha (CDC42BPa)
- Cystathionine Beta Synthase (CbS)