From Wikipedia - Reading time: 5 min
This is a sub-list from List of doping cases in sport representing a full list of surnames starting with J.
| Name | Country | Event | Banned substance(s) | Reference(s) |
|---|---|---|---|---|
| Shayna Jack | Swimming | Ligandrol | [1] | |
| Mette Jacobsen | Swimming | Prednisolone, Prednisone | [2] | |
| Mahmoud Jadaan | Swimming | Metenolone | [3] | |
| Jörg Jaksche | Cycling | Erythropoietin (EPO) | [4] | |
| Laurent Jalabert | Cycling | Erythropoietin (EPO) | [5] | |
| Jiraporn Janchum | Weightlifting | Methandienone | [6] | |
| Paulo Bruno Janeiro | Swimming | Cannabis | [7] | |
| Michal Jarczak | Gymnastics | THC | [8] | |
| Daniel Jardemyr | Ice hockey | Amphetamine | [9] | |
| Sabri Jari | Swimming | Refusal to submit to doping test | [10] | |
| Mohammed Jassim | Weightlifting | Cortisone | [11] | |
| Ernst Jean-Joseph | Football (soccer) | Phenmetrazine | [12] | |
| Leon Jeanne | Football (soccer) | [13] | ||
| Genevieve Jeanson | Cycling | Erythropoietin (EPO) | [14] | |
| Brian Dalgaard Jensen | Cycling | Erythropoietin (EPO) | [15] | |
| Knud Enemark Jensen | Cycling | Amphetamines | [16] | |
| Aubrey Jesseau | Canadian football | Stanozolol | [17] | |
| Tomas Johansson | Sport wrestling | Anabolic steroids | [18] | |
| Therese Johaug | Cross-country skiing | Anabolic steroid Clostebol | [19] | |
| Ben Johnson | Sprinting | Stanozolol | [20] | |
| Eddie Johnson | Basketball | Cocaine | [21] | |
| Gea Johnson | Athletics (Hept) | Anabolic steroids | [22] | |
| Gea Johnson | Weightlifting | Epitestosterone | [23] | |
| Gea Johnson | Cycling | Modafinil | [24] | |
| Willie Johnston | Football (soccer) | Reactivan | [25] | |
| Harrison Jones | Diving | Cannabis | [7] | |
| JaCoby Jones | Baseball | Non-performance-enhancing drugs | [26] | |
| Roy Jones Jr. | Boxing | Androstenedione (Banned substance by the IBF but available legally over-the-counter in the US at time of use) | [27] | |
| Ahmad Joughili | Weightlifting | Metandienone | [6] | |
| Alberto Jose | Weightlifting | Methandienone, Dehydrochlormethyltestosterone | [6] | |
| Mi Naw Ju | Weightlifting | [6] | ||
| Rui Jorge | Association football | Budesonide (ban lifted due to Sporting CP's failure to notify authorities of his medical exemption) | [28][29] | |
| Miguel Juarez | Swimming | Nandrolone | [30] | |
| Olivera Juric | Weightlifting | Metandienone | [6] | |
| Ladislav Jusko | Water polo | Cannabis | [31] |