This is a sub-list from List of doping cases in sport representing a full list of surnames starting with L.
| Name | Country | Event | Banned substance(s) | Reference(s) |
|---|---|---|---|---|
| Raimonds Lācis |
 Latvia
|
Weightlifting | Furosemide | (in Latvian) |
| Marina Lacroix |
 France
|
Swimming | Cannabis | |
| Lee Lacy |
 United States
|
Baseball | Cocaine | |
| Juha Lallukka |
 Finland
|
Cross-country skiing | Growth hormone | |
| Óscar Lagos |
 Honduras
|
Football (soccer) | Cocaine, marihuana | |
| Bernard Lama |
France
|
Football (soccer) | Cannabis | |
| Eric Lamaze |
 Canada
|
Equestrian | Cocaine | |
| Abreu Lamec |
 Venezuela
|
Weightlifting | Stanozolol | |
| Floyd Landis |
United States
|
Cycling | Testosterone | |
| Jeremy Landy |
France
|
Water polo | Cannabis | |
| Jose Langberg |
 Peru
|
Swimming | Cannabis | |
| Dmitry Lapikov |
 Russia
|
Weightlifting | Methylhexaneamine | |
| Konstantina Lapou |
 Greece
|
Weightlifting | ||
| Arnaud Laroche |
France
|
Swimming | Testosterone | |
| Simon Larose |
Canada
|
Tennis | Cocaine | |
| Mehrullah Lassi |
 Pakistan
|
Boxing | Cannabis | |
| Pei-Lin Lee |
 Chinese Taipei
|
Weightlifting | Furosemide | |
| Lassouani Leila |
France
|
Weightlifting | Norandrosterone 4,9 ng/ml | |
| Chun Leung Lau |
 Hong Kong
|
Swimming | Methandienone | |
| Matt Lawton |
United States
|
Baseball | Boldenone | |
| Stan Lazaridis |
 Australia
|
Football (soccer) | Finasteride | |
| Larisa Lazutina |
Russia
|
Cross-country skiing | NESP | |
| Fabien Le Bec |
France
|
Water polo | Cannabis | |
| Chris Leben |
United States
|
Mixed martial arts | Stanozolol | |
| Luc Leblanc |
France
|
Cycling | Erythropoietin (EPO) (self admitted) | |
| Yann Lejuste |
France
|
Water polo | cannabis | |
| Rasa Leleivytė |
 Lithuania
|
Cycling | EPO | |
| Benoit Lemeunier |
France
|
Swimming | Cannabis | |
| Kayle Leogrande |
United States
|
Cycling | Erythropoietin (non-analytical positive) | |
| Dimitru Leonard |
 Romania
|
Weightlifting | Norandrosterone | |
| Jeffrey Leonard |
United States
|
Baseball | Cocaine | |
| Vladimir Leontiev |
Russia
|
Swimming | Cannabis | |
| Kimo Leopoldo |
United States
|
Mixed martial arts | Stanozolol | |
| Varvara Lepchenko |
United States
|
Tennis |
Meldonium (Provisionally suspended) Adrafinil, and metabolite modafinil (Suspended for four years) |
|
| Stephen Letchford |
 England
|
Ten-pin bowling | Benzoylecgonine | |
| Nick Leventis |
England
|
Auto racing | Anabolic steroids | |
| Nikita Leviakov |
Russia
|
Swimming | Stanozolol, Dehydrochlormethyltestosterone | |
| Kristen Lewis |
United States
|
Swimming | Pseudoephedrine | |
| Rashard Lewis |
United States
|
Basketball | Steroids (ten-game suspension) | |
| Manukyan Liana |
 Armenia
|
Weightlifting | Metandienone | |
| Yohan Lidon |
France
|
Kickboxing, Muay Thai | Heptaminol | |
| Semen Linder |
 Kazakhstan
|
Weightlifting | Stanozolol | |
| Li Ning |
 China
|
Swimming | ||
| Li Zhesi |
China
|
Swimming | EPO | |
| Valiantsina Liakhavets |
 Belarus
|
Weightlifting | ||
| Rafael Liechti |
 Switzerland
|
Water polo | Cannabis | |
| Hans-Gunnar Liljenwall |
 Sweden
|
Modern pentathlon | Alcohol | |
| Mads Lind |
 Denmark
|
Handball | Anabolic steroids | |
| Lourdes Domínguez Lino |
 Spain
|
Tennis | Cocaine | |
| Marina Lisogor |
 Ukraine
|
Cross-country skiing | Trimetazidine | |
| Yuliya Litvina |
Kazakhstan
|
Swimming | Methylhexaneamine | |
| Alexander Litvintchev |
Russia
|
Rowing | ||
| Liu Bingyao |
China
|
Swimming | Clenbuterol | |
| Jing Liu |
China
|
Swimming | Prednisone | |
| Liu Xingchen |
China
|
Swimming | Clenbuterol | |
| Jake Livermore |
England
|
Football (soccer) | Cocaine | |
| Jose Llanos Quiceno |
 Colombia
|
Water polo | THC, Cannabis | |
| Ryan Llewellyn |
 United Kingdom
|
Boxing | Methylhexaneamine | |
| Paul Lo Duca |
United States
|
Baseball | Steroids | (Admission of guilt) |
| Aleh Loban |
Belarus
|
Weightlifting | Metandienone | |
| Romain Locher |
France
|
Water polo | cannabis | |
| Joshua Loges |
 Germany
|
Swimming | Clenbuterol | |
| Boris Loncaric |
 Croatia
|
Swimming | Methylhexaneamine | |
| Simos Loukas |
Greece
|
Water polo | Methylphenidate | |
| Paulo Da Silva Loureiro |
 Portugal
|
Volleyball | Cannabinoids | |
| Sebastien Louveau |
France
|
Swimming | Cannabis | |
| Natalya Lovtsova |
Russia
|
Swimming | ||
| Brenda Lozaique |
 Seychelles
|
Weightlifting | Metandienone | |
| Miryan Lozi |
 Albania
|
Weightlifting | ||
| Lü Bin |
China
|
Swimming | ||
| Lu Leyujia |
China
|
Swimming | Drostanolone | |
| Lu Meng |
China
|
Wrestling | Diuretic | |
| Frank Luck |
Germany
|
Biathlon | Turinabol (self-admitted) | |
| Lebron Luis |
 Puerto Rico
|
Weightlifting | Methylhexaneamine | |
| Vladislav Lukanin |
Russia
|
Weightlifting | Noraxondrolone, Epioxandrolone | |
| Zach Lund |
United States
|
Skeleton | Finasteride | |
| Luo Meng |
China
|
Wrestling | Diuretic | |
| Zsolt Lutter |
 Hungary
|
Swimming | Refusal to submit to doping test | |
| Evgeny Luzyanin |
Russia
|
Rowing | ||
| Kerry Lynch |
United States
|
Nordic combined | Blood doping |