David Munyasia, a Kenyan boxer, was the first athlete to be found in violation of International Olympic Committee anti-doping rules at the 2004 Summer Olympics in Athens.

Four times the allowed limit of 5 micrograms per milliliter was found to be present in Munyasia's urine.

Munyasia confessed he was regular user of miraa (qat), a popular stimulant in Kenya.

One year earlier, he won the silver medal in the bantamweight division at the All-Africa Games in Abuja, Nigeria.

In the final of the event he lost to Egyptian fighter Mohamed Abdelsayed.