Rajko Ostojic (Croatian pronunciation: [ra?jko ôstojit?]; born 19 February 1962) is a Croatian physician and politician.
He is member of the Social Democratic Party of Croatia (SDP).
Ostojic graduated from the University of Zagreb School of Medicine and specialised gastroenterology and hepatology.He first became involved in politics in 2000 when he was appointed assistant to health minister Ana Stavljenic-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 Ostojic became Croatia's Health Minister in the Cabinet of Zoran Milanovic in December that year.