People entered in this category have either:
- Been suspended by a sporting body (an international governing body, a national federation, or a professional league) for illegal performance-enhancing drug, and/or banned drug, use
- Publicly admitted such use
- Been found to have taken illegal performance-enhancing drugs by a court of law
- Been suspended by a sporting body for failure to submit to mandatory drug testing
See also: List of sportspeople who tested positive for banned substances.