|Born||25 November 1980|
|Height||1.73 m (5 ft 8 in)|
|Weight||96 kg (212 lb)|
|Coached by||Dshahid Agiskoglu|
He defeated France's Vincent Aka-Akesse for the gold medal in the 96 kg division at the 2005 Mediterranean Games in Almería, Spain, in addition to his silver medal won at the 2005 Summer Universiade in İzmir, Turkey. He earned the bronze at the 2008 European Wrestling Championships in Tampere, Finland.
Koc represented Turkey at the 2008 Summer Olympics in Beijing, where he competed for the men's 96 kg class. He defeated Germany's Stefan Kehrer in the preliminary round of sixteen, before losing out the quarterfinal match to Russia's Shirvani Muradov, who was able to score three points in two straight periods, leaving Koc without a single point. Because his opponent advanced further into the final match, Koc offered another shot for the bronze medal by entering the repechage bouts. Unfortunately, he was defeated in the first round by Ukraine's Georgii Tibilov, with a two-set technical score (0–1, 1–3), and a classification point score of 1–3.
- Evans, Hilary; Gjerde, Arild; Heijmans, Jeroen; Mallon, Bill. "Hakan Koç". Olympics at Sports-Reference.com. Sports Reference LLC. Retrieved 19 January 2013.
- "Güreş Kafilesi Listesi" (PDF) (in Turkish). Universiade 2005 Izmir. Retrieved 2013-08-17.
- "Gold for Hakan Koc". Hurriyet Daily News. 1 July 2005. Retrieved 19 January 2013.
- "European Championship: Freestyle seniors 2008-04-01 Tampere (FIN) – 96.0 kg". International Wrestling Federation. Retrieved 19 January 2013.
- "Men's Freestyle 96kg (211.5 lbs) Quarterfinal Official". NBC Olympics. Retrieved 19 January 2013.
- "Men's Freestyle 96kg (211.5 lbs) Repechage Round 2 Official". NBC Olympics. Retrieved 19 January 2013.
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