# List of doping cases in sport (C)

This is a sub-list from List of doping cases in sport representing a full list of surnames starting with C.
* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
| Name | Country | Event | Banned substance(s) | Reference(s) |
| Javier Cabanas | Spain | Swimming | Epehedrine | |
| Enos Cabell | United States | Baseball | Cocaine | |
| Danny Cadamarteri | England | Football (soccer) | Ephedrine | |
| Cai Huijue | China | Swimming | Triamterene | |
| Valeriu Calancea | Romania | Weightlifting | Methandienone | |
| Michael Callens | Belgium | Swimming | Cannabis | |
| Filippo Calorosi | Italy | Tennis | | |
| Robinson Canó | Dominican Republic | Baseball | Furosemide | |
| Brad Cardinal | Canada | Wrestling | THC | |
| Jerome Cazenave | France | Water polo | Cannabis | |
| Oscar Camenzind | Switzerland | Cycling | Erythropoietin (EPO) | |
| Mike Cameron | United States | Baseball | Stimulants | |
| Ken Caminiti | United States | Baseball | Anabolic steroids (never sanctioned; admitted to use after the end of his career) | |
| Miguel Cammacho | Venezuela | Weightlifting | Metandienone | |
| Neil Campbell | England | Cycling | HCG | |
| Guillermo Cañas | Argentina | Tennis | Hydrochlorothiazide | |
| José Canseco | United States | Baseball | Anabolic steroids (never sanctioned; admitted to use after the end of his career) | |
| Ludovic Capelle | Belgium | Cycling | Erythropoietin (EPO) | |
| Dean Capobianco | Australia | Athletics | Stanozolol | |
| Ivan Caprari | Italy | Water polo | Cocaine | |
| Nuno Cardoso | Angola | Swimming | Nandrolone | |
| Salvador Carmona | Mexico | Football (soccer) | Steroids | |
| Alicia Carratero | Spain | Diving | Cannabis | |
| Danilo Carrega | Brazil | Swimming | Stanozolol | |
| Anthony Carter | United Kingdom | Lawn tennis | Cannabis | |
| Stefano Casagranda | Italy | Cycling | | |
| Francesco Casagrande | Italy | Cycling | Testosterone | |
| Morales Castillo | Costa Rica | Cycling | GW501516 | |
| Enrico Catalano | Italy | Swimming | THC metabolites | |
| Pietro Caucchioli | Italy | Cycling | | |
| Rupeni Caucaunibuca | Fiji | Rugby union | Cannabis | |
| Greg Cavanagh | Canada | Cycling | Testosterone | |
| Deniss Čerkovskis | Latvia | Modern pentathlon | Anabolic steroid | (in Latvian) |
| Sergo Chakhoyan | Australia | Weightlifting | Stanozolol | |
| Rajib Chakraborty | India | Swimming | Attempted tampering of sample | |
| Paul Champalbert | France | Swimming | Cannabis | |
| Sanamacha Chanu | India | Weightlifting | Furosemide | |
| Maxime Chaply | France | Swimming | Cannabis | |
| Justin Charles | Australia | Australian rules football | Boldenone | |
| Mikalai Charniak | Belarus | Weightlifting | Mesterolone | |
| Julio Cesar Chavez Jr. | Mexico | Boxing | Diuretics (2010) Cannabis (2012) | |
| Zuraini Che Rose | Malaysia | Weightlifting | Metandienone | |
| Cristiana Checchi | Italy | Shot put | Doping | |
| Juan Ignacio Chela | Argentina | Tennis | Metil-testosterone | |
| Chen Ganfen | China | Swimming | | |
| Shiyun Chen | China | Swimming | Prednisone | |
| Chen Sijia | China | Swimming | Clenbuterol | |
| Alexei Cherepanov | Russia | Ice hockey | Nikethamide | |
| Chen Po-Pu | Chinese Taipei | Weightlifting | Methandienone | (in German) |
| Watsana Chianram | Thailand | Weightlifting | Methandienone | |
| Viktor Chislean | Moldova | Weightlifting | | |
| Velichko Cholakov | Bulgaria | Weightlifting | Steroids | |
| Elais Christoforou | Cyprus | Swimming | Ephedrine | |
| Traian Cihărean | Romania | Weightlifting | | |
| César Cielo | Brazil | Swimming | Furosemide | |
| Marin Čilić | Croatia | Tennis | Nikethamide | |
| Anatoli Ciricu | Moldova | Weightlifting | | |
| Velichko Cholakov | Bulgaria | Weightlifting | Metandienone | |
| Roger Clemens | United States | Baseball | Anabolic steroids | |
| Clemence Clerc | France | Water polo | Prednisone & Prednisolone | |
| Madga Cojom | Guatemala | Weightlifting | | |
| Julien Colchen | France | Water polo | Terbutaline | |
| Kleon Coleman | Belize | Volleyball | Hydrochlorothiazide, Chloraminophenamide | |
| Carolina Colorado | Colombia | Swimming | Sibutramine | |
| James Comben | England | Rugby union | Methylhexanamine | |
| Gloria Comerma | Spain | Field hockey | | |
| Alberto Contador | Spain | Cycling | Clenbuterol | |
| David Cookson | United Kingdom | Rugby | Methylhexaneamine | |
| Chris Cooper | United States | American football | THG | |
| Kit Cope | United States | Mixed martial arts | Boldenone | |
| Guillermo Coria | Argentina | Tennis | Nandrolone | |
| Chris Cornes | England | Football (soccer) | Cocaine | |
| Alizé Cornet | France | Tennis | Missed tests (later cleared due to misconduct by doping officer) | |
| Alejandro Cortes Gonzalez | Chile | Weightlifting | Dimethylpentylamine | |
| Leonardo Costa | Brazil | Swimming | Stanozolol | |
| Ben Cousins | Australia | Australian rules football | Methamphetamine (admitted to a U.S. rehab for treatment) | |
| Fernando Couto | Portugal | Football (soccer) | Nandrolone | |
| Alexander Crispim | Brazil | Mixed martial arts | Desoxymethyltestosterone | |
| Cronulla-Sutherland Sharks (eleven players) | Australia | rugby league | Various supplements | |
| Brayden Crossley | Australia | Australian rules football | Cocaine | |
| Ryan Crowley | Australia | Australian rules football | Methadone | |
| Kevin Cruz Soto | Chile | Weightlifting | Dimethylpentylamine | |
| Brian Cushing | United States | American football | hCG | |
| Baatarsükhiin Chinzorig | Mongolia | Boxing | Metandienone metabolite | |