Rajko Ostojić (Croatian pronunciation: [rǎːjko ôstojitɕ]; born 19 February 1962) is a Croatian physician and politician.

A member of the Social Democratic Party (SDP), he has been serving as Deputy Speaker of the Croatian Parliament.

[1] Ostojić graduated from the School of Medicine at the University of Zagreb and specialised gastroenterology and hepatology.

[1][2] He first became involved in politics in 2000 when he was appointed assistant to health minister Ana Stavljenić-Rukavina, and later served a term in the 6th Sabor assembly from 2008 to 2011.

Following the November 2011 election won by the centre-left Kukuriku coalition Ostojić became Croatia's Health Minister in the cabinet of Zoran Milanović in December that year.