Supachai Panitchpakdi (Thai: ?????? ???????????, RTGS: Supphachai Phanitchaphak, pronounced [sùp.p?a.t???aj p?a?.nÃt.t???a.p?ák]; born 30 May 1946 in Bangkok, Thailand) is a Thai politician and professor.
He was Secretary-General of the UN Conference on Trade and Development (UNCTAD) from 1 September 2005 to 31 August 2013.
Prior to this, he was the Director-General of the World Trade Organization (WTO) from 1 September 2002 to 1 September 2005.