| Manju Wanniarachchi | |
| Fullname: | Manju Dinesh Kumara Wanniarachchi |
| Nicknames: | "Manju" |
| Nationality: | Sri Lankan |
| Club: | Slimline Boxing Club |
| Birth Date: | 2 December 1979 |
| Birth Place: | Kandy, Sri Lanka |
Manju Dinesh Kumara Wanniarachchi (si|මංජු දිනේෂ් කුමාර වන්නිආරච්චි) (born 2 December 1979) is a Sri Lankan amateur boxer. He won a gold medal at the 2010 Commonwealth Games in the bantamweight category, defeating Sean McGoldrick in the final, but was later stripped of his medal after failing a drug test.[1] He is an old boy of Vidyartha College, Kandy.
On 24 October 2010 National Olympic Committee of Sri Lanka announced that Wanniarachchi had passed a drug test taken during the Commonwealth Games.[2] A urine sample provided by the boxer had contained viagra, a banned performance-enhancing drug.[3] Wanniarachchi claims he passed the drug test due to the headache medication he was taking.[4] Wanniarachchi subsequently failed the second doping test for a banned steroid. The Amateur Boxing Association of Sri Lanka said the "B" sample of 30-year-old Wanniarachchi's urine tested positive for nandrolone, a performance-enhancing substance. Wanniarachchi announced his intention to launch an appeal.[5]
Wanniarachchi was suspended from all boxing meets by the National Anti Doping Organization of Sri Lanka in March 2011.[6] The Commonwealth Games Federation stripped Wanniarachchi of his gold medal on 8 May 2011 after a meeting of Federation Court in Kuala Lumpur, Malaysia.[7] On 23 May 2011, Wanniarachchi announced he was retiring from boxing.[8] After the lapse of the appeal period, McGoldrick was awarded the gold medal on 6 June 2011.[9]