Ivo Sanader (Croatian pronunciation: [ǐːʋɔ sanǎːdɛr]; born Ivica Sanader; born 8 June 1953 in Split) is a Croatian politician who served as the Prime Minister of Croatia from 2003 to 2009.

Sanader obtained his education in comparative literature in Austria, where he also later worked in the 1980s. He worked as a journalist, in marketing, publishing and also as a private enterpreneur. In the 1990s, he was briefly in charge of the theatre in Split before becoming the Minister of Science and Technology as a member of Croatian Democratic Union (HDZ). Soon thereafter, he moved to diplomacy, and served two terms as the Deputy Minister of Foreign Affairs.

He was elected leader of the HDZ party in 2000 and 2002, and with them won the 2003 election, becoming the Prime Minister. He was also reelected in the 2007 parliamentary elections. In June 2009, Sanader abruptly resigned his post, leaving scarce explanation for his actions, and rumours of involvement in various criminal cases became increasingly rampant. In January 2010, he tried to stage a political comeback inside HDZ, but was then ejected from party membership.