Parliamentary career
- Member of Althingi for the Reykjavík North Constituency 2003–2009, for the Reykjavík South Constituency 2009–2016 and for the Reykjavík North Constituency since 2016 (Independence Party).
Party group
- Chair of the Independence Party's parliamentary group 2016–2017.
- Deputy Chair of the Independence Party's parliamentary group 2013–2016 and 2005–2007.
Previous committees
- Member of the Budget Committee 2016–2017 and 2013–2016 (1st Deputy Chair 2013–2016).
- Member of the Foreign Affairs Committee 2013–2014.
- Member of the Economic Affairs and Trade Committee 2011–2013.
- Member of the Health Committee 2009–2011.
- Member of the Trade Committee 2009–2011.
- Member of the Environment Committee 2003–2007 (Chair 2004–2007).
- Member of the Fisheries Committee 2003–2007.
- Member of the Social Affairs Committee on 2003–2006 (Deputy Chair 2003–2006).
- Member of the EU-Iceland joint Parliamentary Committee 2013–2016 (Chair 2013–2016).
- Member of the Icelandic delegation to the EFTA and EEA Parliamentary Committees 2013–2016 (Chair 2013–2016).
- Member of the Icelandic delegation to the EFTA Parliamentary Committee 2003–2007 (Chair 2005–2007).
Ministerial career
- Minister of the Environment, Energy and Climate since 2021.
- Minister for Foreign Affairs and International Development Cooperation 2019–2021.
- Minister for Foreign Affairs and External Trade 2017–2019.
- Minister of Health and Social Security 2007–2009.
Political party career
Member of Reykjavík City Council 1998–2006. Member of the Board of The Consumers Association of Iceland 2004–2006. Deputy Chair of the International Young Democrat Union, IYDU, 1998–2002. Chair of the Independence Partys Committiee on Trade 1997. Member of the Board of Democrat Youth Community of Europe, DEMYC, 1997–2001. Member of the Executive Board of the Independence Party 1993–1997. Member of the Central Board of the Independence Party 1991–1997. Chair of the National Youth Organization of the Independence Party 1993–1997.
