| Honorific-Prefix: | His Excellency |
| Oh Joon | |
| Office1: | President of the United Nations Economic and Social Council |
| Term Start1: | 24 July 2015 |
| Term End1: | 28 July 2016 |
| 1Blankname1: | Secretary-General |
| 1Namedata1: | Ban Ki-moon |
| Predecessor1: | Martin Sadjik |
| Successor1: | Frederick Musiiwa Makamure Shava |
| Office2: | South Korean Ambassador to the United Nations |
| Term Start2: | 20 September 2013 |
| Term End2: | 30 December 2016[1] |
| Successor2: | Cho Tae-yul |
| 2Blankname2: | Secretary-General |
| 2Namedata2: | Ban Ki-moon |
| Office3: | South Korean Ambassador to Singapore |
| President3: | Lee Myung-bak Park Geun-hye |
| Term Start3: | 2010 |
| Term End3: | 2013 |
| Birth Place: | Seoul, Republic of Korea |
| Nationality: | South Korean |
| Alma Mater: | Seoul National University (1974–1978) London School of Economics and Political Science (1982–1983) Stanford University (1990–1992) |
| Spouse: | Kim Miri Department of United Nations and the Art of Peace Professor |
| Native Name Lang: | ko |
Oh Joon (; born 4 October 1955) is the former South Korean Ambassador to the United Nations (UN). He became South Korean Ambassador to the United Nations in September 2013. From July 24, 2015 to July 28, 2016, he was the 71st President of the UN Economic and Social Council.[2] [3]
In 2016, Oh was appointed by Erik Solheim, the Chairman of the Development Assistance Committee, to serve on the High Level Panel on the Future of the Development Assistance Committee under the leadership of Mary Robinson.[4]