List of doping cases in sport (J)

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	Australia	Swimming	Ligandrol	[1]
Mette Jacobsen	Denmark	Swimming	Prednisolone, Prednisone	[2]
Mahmoud Jadaan	Syria	Swimming	Metenolone	[3]
Jörg Jaksche	Germany	Cycling	Erythropoietin (EPO)	[4]
Laurent Jalabert	France	Cycling	Erythropoietin (EPO)	[5]
Jiraporn Janchum	Thailand	Weightlifting	Methandienone	[6]
Paulo Bruno Janeiro	Brazil	Swimming	Cannabis	[7]
Michal Jarczak	Poland	Gymnastics	THC	[8]
Daniel Jardemyr	Sweden	Ice hockey	Amphetamine	[9]
Sabri Jari	Tunisia	Swimming	Refusal to submit to doping test	[10]
Mohammed Jassim	Iraq	Weightlifting	Cortisone	[11]
Ernst Jean-Joseph	Haiti	Football (soccer)	Phenmetrazine	[12]
Leon Jeanne	Wales	Football (soccer)		[13]
Genevieve Jeanson	Canada	Cycling	Erythropoietin (EPO)	[14]
Brian Dalgaard Jensen	Denmark	Cycling	Erythropoietin (EPO)	[15]
Knud Enemark Jensen	Denmark	Cycling	Amphetamines	[16]
Aubrey Jesseau	Canada	Canadian football	Stanozolol	[17]
Tomas Johansson	Sweden	Sport wrestling	Anabolic steroids	[18]
Therese Johaug	Norway	Cross-country skiing	Anabolic steroid Clostebol	[19]
Ben Johnson	Canada	Sprinting	Stanozolol	[20]
Eddie Johnson	United States	Basketball	Cocaine	[21]
Gea Johnson	United States	Athletics (Hept)	Anabolic steroids	[22]
Gea Johnson	United States	Weightlifting	Epitestosterone	[23]
Gea Johnson	United States	Cycling	Modafinil	[24]
Willie Johnston	Scotland	Football (soccer)	Reactivan	[25]
Harrison Jones	United States	Diving	Cannabis	[7]
JaCoby Jones	United States	Baseball	Non-performance-enhancing drugs	[26]
Roy Jones Jr.	United States	Boxing	Androstenedione (Banned substance by the IBF but available legally over-the-counter in the US at time of use)	[27]
Ahmad Joughili	Syria	Weightlifting	Metandienone	[6]
Alberto Jose	Dominican Republic	Weightlifting	Methandienone, Dehydrochlormethyltestosterone	[6]
Mi Naw Ju	Myanmar	Weightlifting		[6]
Rui Jorge	Portugal	Association football	Budesonide (ban lifted due to Sporting CP's failure to notify authorities of his medical exemption)	[28][29]
Miguel Juarez	Venezuela	Swimming	Nandrolone	[30]
Olivera Juric	Bosnia and Herzegovina	Weightlifting	Metandienone	[6]
Ladislav Jusko	Czech Republic	Water polo	Cannabis	[31]