| Approved Symbol | Approved Name | Previous Symbols | Aliases | Chromosome | Accession Numbers | RefSeq IDs |
| CTSA | cathepsin A | GSL, PPGB | | 20q13.12 | M22960 | NM_000308 |
| CTSB | cathepsin B | | | 8p23.1 | M14221 | NM_147780 |
| CTSC | cathepsin C | PLS, PALS | DPP1 | 11q14.2 | AK223038 | NM_001814 |
| CTSD | cathepsin D | CPSD | | 11p15.5 | M11233 | NM_001909 |
| CTSE | cathepsin E | | | 1q32.1 | BC042537 | NM_001910 |
| CTSF | cathepsin F | | CATSF | 11q13.2 | AF071749 | NM_003793 |
| CTSG | cathepsin G | | CG | 14q12 | M16117 | NM_001911 |
| CTSH | cathepsin H | CPSB | ACC-4, ACC-5 | 15q25.1 | X07549 | NM_004390 |
| CTSK | cathepsin K | CTSO2, CTSO, PYCD | PKND | 1q21 | BC016058 | NM_000396 |
| CTSL1 | cathepsin L1 | CTSL | FLJ31037 | 9q21.33 | X12451 | NM_001912 |
| CTSL2 | cathepsin L2 | | CTSU, CTSV | 9q22.33 | Y14734 | NM_001333 |
| CTSL3 | cathepsin L family member 3 | | HCTSL-s | 9q21.33 | AJ851862 | NM_001023564 |
| CTSLL1 | cathepsin L-like 1 | CTSLL | | 10q23.2 | L07772 | |
| CTSLL2 | cathepsin L-like 2 | | | 10q11.22 | L25628 | |
| CTSLL3 | cathepsin L-like 3 | | | 10q11.22 | L25629 | |
| CTSLL4 | cathepsin L-like 4 | | bA564C4.3, OTTHUMG00000018237 | 10q11.23 | | |
| CTSLL5 | cathepsin L-like 5 | | bA342C24.4, OTTHUMG00000018096 | 10q11.22 | | |
| CTSLL6 | cathepsin L-like 6 | | bA479O17.1, OTTHUMG00000018589 | 10q22.3 | | |
| CTSLL7 | cathepsin L-like 7 | | bA144G6.6, OTTHUMG00000018112 | 10q11.22 | | |
| CTSO | cathepsin O | CTSO1 | | 4q32.1 | X77383 | NM_001334 |
| CTSS | cathepsin S | | | 1q21 | M90696 | NM_004079 |
| CTSW | cathepsin W | | | 11q13.1 | AF055903 | NM_001335 |
| CTSZ | cathepsin Z | | CTSX | 20q13.32 | AF032906 | NM_001336 |