Adrián Zsolt Annus (born 28 June 1973 in Szeged) is a Hungarian hammer thrower, who was stripped of his gold medal at the 2004 Summer Olympic Games in Athens for a doping violation in a highly publicized scandal.

The disqualification received heightened attention, as it came on the heels of several drug scandals at the Athens Games and came as Annus' teammate, discus thrower Róbert Fazekas was also stripped of his Olympic title for a doping violation.

He eventually received a spot on the team due to an injury, but was not in top form to be a real contender and finished seventeenth.

The International Olympic Committee concluded, that his urine samples—taken before and after competition—showed evidence of belonging to different people, therefore indicating tampering.

The IOC never officially concluded how it was possible for Annus to provide samples that belonged to different people, but track and field insiders said he likely used a device, which included a container for urine and a fake penis and emptied the container into the testing bottle when required to provide a sample.