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|European Commissioner for the Environment|
9 February 2010 – 1 November 2014
|President||José Manuel Barroso|
|Preceded by||Stavros Dimas|
|Succeeded by||Karmenu Vella (Environment, Maritime Affairs and Fisheries)|
|European Commissioner for Science and Research|
22 November 2004 – 9 February 2010
|President||José Manuel Barroso|
|Preceded by||Louis Michel (Research)|
|Succeeded by||Máire Geoghegan-Quinn (Research, Innovation and Science)|
|European Commissioner for Enlargement|
1 May 2004 – 21 November 2004
Served with Günter Verheugen
|Preceded by||Günter Verheugen|
|Succeeded by||Olli Rehn|
22 March 1958|
Kropa, Yugoslavia (now Slovenia)
|Political party||Liberal Democracy|
|Alma mater||University of Ljubljana|
Janez Potočnik (pronounced [ˈjaːnɛs pɔˈtɔtʃnik]; born 22 March 1958) is a Slovenian politician, he served as European Commissioner for Environment until 1 November 2014. He was formerly Slovenia's Minister for European Affairs.
Janez Potočnik was born on 22 March 1958 in Kropa, SR Slovenia. His father Stojan was innkeeper and his mother Lojzka was a school teacher. He has one sibling, a brother seven years older named Lojz. After finishing elementary school in Lipnica, Potočnik attended high school in Kranj, where he was also active in sports, notably in basketball and track and field. After high school he moved to Ljubljana, where he received a bachelor's degree in economics from the University of Ljubljana in 1982.
Potočnik served as assistant director (1984–1987) and director (1993–2001) at the Institute of Macroeconomic Analysis and Development in Ljubljana. In 1993, he received his PhD in economics from the University of Ljubljana. Between 1988 and 1993, he was a senior researcher at the Institute for Economic Research in Ljubljana.
Potočnik was Minister Councillor at the Slovenian Prime Minister's Cabinet from 2001 to 2002 and Minister for European Affairs from 2002 to 2004. He headed the negotiating team for the Accession of Slovenia to the EU between 1998 and 2004.
In 2004 Potočnik became European Commissioner, since November responsible for science and research. On 27 November 2009 he was nominated to serve as European Commissioner for the Environment in the Barroso Commission.
While commissioner, Potočnik stated that he believes trading knowledge and the development of an information society to create prosperity is as important to Europe as trading steel and coal to create peace was 50 years ago. He aimed to develop the European Research Area.
Since 2014, Potočnik has been co-chairing – alongside Alicia Bárcena (2014-2017) and Izabella Teixeira (since 2017) – the International Resource Panel at the United Nations Environment Programme (UNEP); he succeeded Ernst Ulrich von Weizsäcker in that position.
In November 2011, Potočnik was awarded the Fray International Sustainability Award at Fray International Symposium in Cancun, Mexico, for his achievements in sustainable development. 
- Matos, Urša (7 March 2004). "Janez Potočnik". mladina.si. Mladina. Retrieved 13 February 2014.
- "Archived copy". Archived from the original on 27 September 2007. Retrieved 27 May 2012.
- UNEP Welcomes Alicia Bárcena Ibarra as New Co Chair of Expert Panel on Natural Resources United Nations Environment Programme (UNEP), press release of 8 June 2016.
- Dave Keating (November 11, 2014), Potočnik to chair UN resource efficiency panel European Voice.
- "Hon. Janez Potočnik is awarded the Fray International Sustainability Award in Mexico". www.flogen.org. FLOGEN Star OUTREACH. Retrieved 19 February 2018.
- Media related to Janez Potočnik at Wikimedia Commons
- Official Media Gallery
- Official website
- Janez Potočnik's blog
| Slovenian European Commissioner
| European Commissioner for Enlargement
Served alongside: Günter Verheugen
as European Commissioner for Research
| European Commissioner for Science and Research
as European Commissioner for Research, Innovation and Science
| European Commissioner for the Environment
as European Commissioner for the Environment, Maritime Affairs and Fisheries