| 2003-033A | Cablevision 1 |
| 2010-066J | Caerus |
| 1997-071B | Cakrawarta 1 |
| 1969-082K | Calibration Cone |
| 1969-082J | Calibration Cylinder |
| viz. | Calsphere |
| 2006-041F | Camatai |
| 1978-098B | Cameo |
| 1967-026A | Canary Bird |
| 1966-096A | Canary Bird |
| 1968-059B | Cannonball 1 |
| 1971-067C | Cannonball 2 |
| 2003-031H | CanX-1 |
| viz. | Canyon |
| 2007-012P | CAPE-1 |
| 1998-005A | Capricorn (?) |
| 2005-017A | Cartosat-1 |
| 2006-001A | Cartosat-2 |
| 2008-021A | Cartosat-2A |
| 2010-035A | CartoSat-2B |
| 2009-072B | CAS-1 [=China Amateur Satellite] |
| 1971-071A | CAS-A [=Cooperative Applications Satellite] |
| 1990-082A | Casimir 1 |
| 1972-031A | Casper |
| 1997-061A | Cassini |
| 1975-039B | Castor (Francie) |
| 2009-038F | Castor (USA) |
| 1979-104A | CAT-1 |
| 1981-0u57C | CAT-3 |
| 1981-122B | CAT-4 |
| 1999-057A | CBERS-1 |
| 2003-049A | CBERS-2 |
| 2007-042A | CBERS-2B |
| 2000-050A | CBERS-2 (ZY-2) |
| 1984-088A | CCE |
| 2000-035A | CD Radio 1 |
| 2000-051A | CD Radio 2 |
| 1993-009A | CDS-1 |
| 1997-018B | Celestis 1 |
| 1998-007D | Celestis 2 |
| 1999-070C | Celestis 3 |
| 1963-047A | Centaur AC-2 |
| 1964-082A | Centaur AC-4 |
| 1970-106B | CEP-1 |
| 1995-033B | Cerise |
| 2007-006F | CFESat |
| 1991-027B | CGRO |
| 2002-024A | Chai Jang 1 |
| viz. | Chalet |
| 1972-096C | Challenger (Apollo) |
| viz. | Challenger (STS) |
| 2000-039B | CHAMP |
| 1999-040B | Chandra |
| 2008-052A | Chandrayaan 1 |
| 2007-051A | Chang'e 1 |
| 2010-050A | Chang'e 2 |
| 1969-043A | Charlie Brown |
| 2010-032B | Cheollian |
| 2003-061A | Chidao Xing |
| viz. | China |
| 2011-026A | Chinasat 10 |
| 1998-033A | ChinaStar 1 (Zhongwei /=Čung-wej/) |
| viz. | Chinastar (Zhongxing /=Čung-sing/) |
| 2003-002B | CHIPS |
| 1999-002A | Chunghua 1 |
| 1999-002A | Chunghwa 1 |
| 2008-043A | Ciel 2 |
| 1995-002A | Cikada 1 |
| 2008-017A | CINDI |
| 2000-019A | Clarke |
| 1999-064B | Clementine |
| 1994-004A | Clementine 1 |
| viz. | Cluster |
| 2008-017A | C/NOFS |
| 1989-089A | COBE |
| 1998-005A | Cobra Brass (?) |
| 2010-066F | Colony 1-1 |
| 2010-066B | Colony 1-2 |
| 1969-059A | Columbia (Apollo) |
| viz. | Columbia (STS) |
| 1998-011A | COMETS |
| 2006-019A | COMPASS-2 |
| viz. | Compass (ČLR) |
| 1991-027B | Compton GRO |
| 2010-032B | COMS-1 |
| 2009-054B | COMSATBw-1 |
| 2009-021B | COMSATBw-2 |
| viz. | Comstar |
| 2002-034A | CONTOUR |
| 1972-065A | Copernicus |
| 2003-001A | Coriolis |
| viz. | Corona |
| 2006-063A | CoRoT |
| 1979-014A | CORSA-B |
| 1975-072A | COS-B |
| 1988-067A | Cosima 1 |
| 1989-073A | Cosima 2 |
| 1990-047A | Cosima 3 |
| viz. | COSMIC |
| 2007-023A | COSMO-1 |
| 2007-057A | COSMO-2 |
| 2008-054A | COSMO-3 |
| 2010-060A | COSMO-4 |
| 2007-023A | COSMO SkyMed-1 |
| 2007-057A | COSMO SkyMed-2 |
| 2008-054A | COSMO SkyMed-3 |
| 2010-060A | COSMO-SkyMed 4 |
| 1960-013A | Courier 1B |
| 2007-012M | CP-3 |
| 2007-012Q | CP-4 |
| 2009-028C | CP-6 |
| 1997-018B | CPAC-1 |
| 1998-007D | CPAC-2 |
| 1999-070C | CPAC-3 |
| 1994-073B | CRISTA-SPAS-1 |
| 1997-039B | CRISTA-SPAS-2 |
| 1963-026A | CRL-1 |
| 1991-031F | CRO-A |
| 1991-031D | CRO-C |
| 1990-032A | Crocodile |
| 1990-065A | CRRES |
| 2010-013A | CryoSat-2 |
| viz. | CS |
| 2007-012R | CSTB-1 |
| 1992-070C | CTA |
| 2008-019A | CTDRS-1 01 |
| 2011-032A | CTDRS-1 02 |
| 1976-004A | CTS-1 |
| 2002-003A | Cubasa |
| 2005-043E | CubeSat nCube-2 |
| 2005-043C | CubeSat UWE-1 |
| 2009-052D | CubeSat UWE-2 |
| 2003-031J | CubeSat XI-4 |
| 2005-043F | CubeSat XI-5 |
| 2011-070A | Curiosity |
| 2003-031E | CUTE-1 |
| 2006-005C | CUTE-1.7 |
| 2006-005C | CUTE-1.7-APD |
| 2003-049B | CX-1 |
| 2003-049B | CX-1 01 |
| 2008-056B | CX-1 02 |
| 2011-068B | CX-1 03 |
| 1999-040B | CXO |
| 2007-051A | Čchang'e 1 |
| viz. | Čung-sing |
| 1998-033A | Čung-wej 1 |