Morten Østergaard (born 17 June 1976) is a Danish politician who served as Denmark's Minister for Economic and Interior Affairs from 2 September 2014 to 28 June 2015. A member of the Danish Social Liberal Party, he has been a member of the Folketing since 2005, and he was Minister for Research, Innovation and Higher Education from 2011 to 2014, and for a short term in 2014 also Minister for Taxation.
Østergaard holds a master's degree in political science from the University of Aarhus. He was vice-chairman of the party from 2002 to 2005 and has been a member of parliament since the 2005 election.
Following the announcement on 31 August 2014 that Margrethe Vestager is to become Denmark's EU Commissioner, Østergaard was elected parliamentary group leader of the Danish Social Liberal Party and was appointed Deputy Prime Minister of Denmark.