| Alexander Cadenbach (Osnabrück) | P940 |
| Bernd Calcum (Bochum) | V782 |
| Thomas Calvelage (Osnabrück) | P940 |
| Paolo Camici (London, GB) | P1225 |
| Corrado Carbucicchio (Leipzig) | P447, P463, V1115, V1372, V517 |
| Edward Carmeliet (Leuven, BE) | V788 |
| Peter Carmeliet (Leuven, BE) | V788 |
| Lucie Carrier (Paris, FR) | P442 |
| Andrew Carter (Portland, US) | I1063 |
| Juan Casas (Bucaramanga, CO) | P143 |
| Ingolf Cascorbi (Greifswald) | P135, P651 |
| Sven Caßens (Karlsruhe) | P1209 |
| Clotilde Castaldo (Valhalla, US) | V833 |
| Maria Castel (Hamburg) | V1109, V1113, V619 |
| F Castriota (Ravenna, IT) | V1479 |
| Marco Castrucci (Münster) | V21 |
| Alessandro Cataliotti (Rochester, US) | P1155 |
| Marco Cattaruzza (Göttingen) | V859 |
| William Catterall (Seattle, US) | P675 |
| Corinna Ceconi (Hannover) | V1388, V1484 |
| Claudio Ceconi (Gussago, IT) | H221 |
| Manfred Cejna (Boston, US) | V901 |
| Tae Cha (Montreal, CA) | V604 |
| Alan Chait (Seattle, US) | V1096 |
| Martin Chamberlain (Bristol, GB) | P642 |
| Denis Chartier (Montreal, CA) | V604 |
| Gilles Chatellier (Paris, FR) | A589 |
| Zhiping Chen (Boston, US) | V857 |
| Guangjie Cheng (Atlanta, US) | V1461 |
| Mei Chi (Köln) | P429 |
| Kenneth Chien (San Diego, US) | P358 |
| Stefano Chimenti (Valhalla, US) | V833 |
| Chi Chow (Boston, US) | V1389 |
| Michel Chrétien (Ottawa, CA) | V855 |
| Michael Christ (Marburg) | P1193 |
| Mayer Christoph (München) | V1394 |
| Arthur Christopoulos (Parkville, AU) | V1082 |
| Philipp Christott (Aachen) | V870 |
| Julian Chun (Lübeck) | P722 |
| Sofia Churzidse (Essen) | P1182 |
| Frank Chwallek (Essen) | P935 |
| Marie Cicoira (Berlin) | V264 |
| Andrew Clark (Berlin) | V264 |
| Marcel Claus (Oldenburg) | V867 |
| Piet Claus (Leuven, BE) | V1473, V1476 |
| Claus Claussen (Tübingen) | V875 |
| John Cleland (Cottingham, GB) | H1332, I1269 |
| JGF Cleland (Kingston upon Hull, GB) | V262 |
| Roza Clempus (Atlanta, US) | V1461 |
| Andrew Coat (London, GB) | P1172 |
| Andrew Coats (London, GB) | V267, V68 |
| AJ Coats (Berlin) | V264 |
| Marion Cöster (Frankfurt/Main) | P128 |
| Hagit Cohen (Jerusalem, IL) | V1452 |
| Michael Cohen (Mobile, US) | V481 |
| Antonio Colombo (Essen) | V615 |
| Antonio Colombo (Milano, IT) | P695 |
| Volker Combé (Berlin) | P1203 |
| Thomas Comberg (Bad Krozingen) | V877, V891 |
| Kathrin Conradi (Leipzig) | P104, P106 |
| Ronan Conroy (Dublin, IE) | A588 |
| John Cooke (Stanford, US) | P144, V1399 |
| Angelika Costard-Jäckle (Kiel) | A247, I1025, I1306, I349, V1397 |
| Lisa Costello-Boerrigter (Rochester, US) | P1155 |
| Kellie Couch (San Diego, US) | V1428 |
| Martin Cowie (London, GB) | H759 |
| N Cox (Boston, US) | V1479 |
| James Crapo (Denver, US) | V210 |
| Jochen Cremer (Kiel) | V1397 |
| A Cremonesi (Ravenna, IT) | V1479 |
| Mike Crow (Berlin) | V569 |
| Mike Crow (Baltimore, US) | P369 |
| Fernando Cruz (Rio de Janeiro, BR) | P1224 |
| Antoine Cuijpers (Maastricht, NL) | P176 |
| Paul Cullen (Münster) | A587 |
| Mihaela Cupesi (Boston, US) | V208 |
| Cindy Curry (Boston, US) | V901 |