# List of doping cases in sport (R)

This is a sub-list from List of doping cases in sport representing a full list of surnames starting with R.
* A
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* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
| Name | Country | Event | Banned substance(s) | Reference(s) |
| Andreea Răducan | Romania | Gymnastics | Pseudoephedrine | |
| Fernando Rafael | Argentina | Weightlifting | Clenbuterol | |
| Nursultan Rakhatov | Kazakhstan | Weightlifting | Stanozolol | |
| Robin Rahm | Sweden | Ice hockey | Anabolic steroids | |
| Singh Rahuveer | Iran | Volleyball | Norandrosterone | |
| Satheesha Rai | India | Weightlifting | | |
| Tim Raines Sr. | United States | Baseball | Cocaine | |
| Mario Rajola | Italy | Swimming | Cannabis | |
| Edwin Raju | India | Weightlifting | | |
| Ruslan Ramazanov | Turkmenistan | Weightlifting | Norandrosterone | |
| Kléber Ramos | Brazil | Cycling | Erythropoietin (EPO) | |
| Fernando Romboli | Brazil | Tennis | | |
| Elmira Ramileva | Uzbekistan | Weightlifting | Stanozolol | |
| Manny Ramirez | Dominican Republic | Baseball | Performance Enhancing Drugs | |
| Kevin Randleman | United States | Mixed martial arts | Submitting fake urine sample | |
| Sunita Rani | India | Weightlifting | Norandrosterone | |
| Hussain Rashed | United Arab Emirates | Weightlifting | Stanozolol, Hydroxystanozolol | |
| Alex Rasmussen | Denmark | Cycling | Missed test | |
| Michael Rasmussen | Denmark | Cycling | Blood doping, cortisone, DHEA, EPO, growth hormone, IGF-1, insulin, testosterone | |
| Tamerlan Rasuev | Russia | Wrestling | Stanozolol | |
| Eddy Ratti | Italy | Cycling | EPO | |
| Mihai Ravariu | Romania | Rugby union | hCG | |
| Kiefer Ravena | Philippines | Basketball | methylhexanamine, 1,3-Dimethylbutylamine, higenamine | |
| Alexandr Razdrobenko | Belarus | Swimming | Clenbuterol | |
| Igor Razoronov | Ukraine | Weightlifting | Nandrolone | |
| Shawn Ray | United States | Bodybuilding | Anabolic steroid | |
| Rita Razmaite | Lithuania | Cycling | Bromantan | |
| William Rees-Hole | United Kingdom | Rugby union | Clenbuterol | |
| Dermot Reeve | United Kingdom | Cricket | Cannabis | |
| Abdur Rehman | Pakistan | Cricket | Cannabis | |
| Stephen Rehrmann | United States | Swimming | Pseudoephedrine | |
| Andris Reinholds | Latvia | Rowing | Nandrolone | |
| Rica Reinisch | East Germany | Swimming | Turinabol (self-admitted) | |
| Werner Reiterer | Australia | Athletics | Admitted drug use | |
| Peter Ribe | Norway | Canoeing | Ephedrine | (in Norwegian) |
| Ricardo Riccò | Italy | Cycling | CERA | |
| Wayne Richards | Australia | Rugby league | Anabolic steroids | |
| Sha'Carri Richardson | United States | Sprinting | Cannabis | |
| Maximiliano Richeze | Argentina | Cycling | steroid | |
| Bjarne Riis | Denmark | Cycling | EPO, cortisone, growth hormone (self-admitted) | |
| Samantha Riley | Australia | Swimming | Dextropropoxyphene (later exonerated due to no fault) | |
| Ryan Rimouski | Canada | Association football | Performance enhancing drugs |
| Juan Rincón | Venezuela | Baseball | Steroids | |
| Willie Rioli | Australia | Australian rules football | Submitting fake urine sample | |
| Danny Rios | United States | Baseball | Stanozolol | |
| Alessandro Rivellini | Italy | Swimming | EPO | |
| Barret Robbins | United States | American football | THG | |
| Grant Roberts | United States | Baseball | Steroids | |
| Ana Rodrigues | Portugal | Water polo | Canrenone | |
| Charles Roche | France | Water polo | Cannabis | |
| Aikaterini Roditi | Greece | Weightlifting | Methyltrienolone, Buprenorphine | |
| Miguel Rodrigues | Portugal | Swimming | Methylhexaneamine | |
| Alex Rodriguez | United States | Baseball | Testosterone, primobolan | |
| Ángel Rodríguez | Spain | Motorcycle racing | | |
| Estella Rodriguez Villanueva | Cuba | Judo | Furosemide | |
| Luis Rojas | Venezuela | Swimming | Missed test | |
| Andrea Rolle | Italy | Water polo | Cannabis | |
| Luis Román Rolón | Puerto Rico | Boxing | | |
| Bill Romanowski | United States | American football | Steroids (self-admitted) | |
| Romario | Brazil | Football (soccer) | Finasteride | |
| Helen Rorive | Belgium | Volleyball | S5 diuretics/Acetazolamide | |
| Jarno Rosberg | Finland | Boxing | Methandrostenolone | |
| Loren Ross | United States | Boxing | | |
| Alexandru Rosu | Romania | Weightlifting | T/E 14 | |
| Wolfgang Rottmann | Austria | Biathlon | Violation of blood doping rules | |
| Maralla Roudayna | Syria | Swimming | Ephedrine | |
| Didier Rous | France | Cycling | Erythropoietin (EPO) | |
| Hugo Roux | France | Water polo | Cannabis | |
| Fatullaev Rovshan | Argentina | Weightlifting | Metandienone | |
| Judson Rowbotham | Canada | Rugby | Cannabis | |
| Michal Rubáček | Czech Republic | Swimming | Methylhexaneamine | |
| Ammar Rubaiaawi | Iraq | Weightlifting | Metandienone | |
| Lazaro Ruiz | Cuba | Weightlifting | Boldenone | |
| Graeme Rummans | Australia | Cricket | Probenecid | |
| Raimondas Rumšas | Lithuania | Cycling | | |
| Andrey Russkikh | Russia | Cycling | | |
| Esmatullah Rustam Khil | Afghanistan | Weightlifting | Clostedol, Methylhexaneamine | |
| Stefan Rütimann | Switzerland | Cycling | testosterone | |
| Andrey Rybakov | Russia | Weightlifting | | |
| Jesse Ryder | New Zealand | Cricket | 1-Phenylbutan-2-amine (PBA) and N, alphadiethyl-benzeneethanamine (DEBEA) | |
| Aleksandr Rytchkov | Russia | Football | cannabis | |