This is a sub-list from List of doping cases in sport representing a full list of surnames starting with R.
| 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) | |
| Peter Ribe |
 Norway
|
Canoeing | Ephedrine | (in Norwegian) |
| Ricardo Riccò |
Italy
|
Cycling | CERA | |
| Maximiliano Richeze |
Argentina
|
Cycling | steroid | |
| Bjarne Riis |
Denmark
|
Cycling | EPO, cortisone, growth hormone (self-admitted) | |
| Ryan Rimouski |
 Canada
|
Association football | Performance enhancing drugs | |
| Juan Rincón |
 Venezuela
|
Baseball | Steroids | |
| 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 | |
| Raimondas Rumšas |
Lithuania
|
Cycling | ||
| Andrey Russkikh |
Russia
|
Cycling | ||
| Esmatullah Rustam Khil |
 Afghanistan
|
Weightlifting | Clostedol, Methylhexaneamine | |
| Stefan Rütimann |
 Switzerland
|
Cycling | testosterone | |
| Andrey Rybakov |
Russia
|
Weightlifting | ||
| Aleksandr Rytchkov |
Russia
|
Football | cannabis |