Stjepan Ostojić (born 7 May 1975) is a Croatian former footballer who played as a midfielder. During his professional career he mainly played for Rijeka in Croatia's Prva HNL and for Pomorac. He also spent two seasons with Leoben in Austria. Following his retirement from professional football, he became a manager. He managed several youth teams on the Arabian Peninsula, Rijeka, as an interim coach, Pomorac and Krk.