Fudbalski klub Kozara Gradiška (Serbian Cyrillic: Фудбалски клуб Koзapa Градишка) is a professional football club from the town of Gradiška, in northern Bosnia and Herzegovina. The club played in the Premier League of Bosnia and Herzegovina in the 2002–03 season. However, they ended up being relegated to the First League of the Republika Srpska after their first season in the country's top league. The club played from 2003 to 2011 in the second level of Bosnia and Herzegovina. After the season 2010–11, the team's promoted again to the Premier League. At the end of the 2011–12 season, they finished on 16th position and were relegated again to the lower tier.
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Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.
Luka Kačavenda Pero Tešić Bojan Marković Nenad Ljubičić Vuk Tešić Njegoš Zeljković Marko Bundalo Sergej Dojčinović Vuk Marić Dušan Utješanović 
Danijel SukaraFor a list of players with Wikipedia article, please see Category:FK Kozara Gradiška players.
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Ilija Miljuš Dragan Vukša Cvijetin Blagojević Borče Sredojević (2003–04) Miloš Pojić (2004 – June 2009) Ile Perišić (July 2009 – June 2010) Vinko Marinović (July 2010 – Sept 2011) Vlado Jagodić (Sept 2011 – April 2012) Siniša Đurić (caretaker) (May 2012) Miloš Pojić (May 2012 – April 2013) Igor Janković (April 2013 – March 2015) Saša Krupljanin (March 2015 – Oct 2015) Stojan Timarac (caretaker) (Oct 2015) Velimir Stojnić (Oct 2015 – June 2017)[3] Borče Sredojević (June 2017 – Sept 2017)[4] Predrag Tomaš (caretaker) (Sept 2017) Siniša Đurić (Oct 2017 – Dec 2017)[5] Vule Trivunović (Dec 2017 – Dec 2018)[6] Igor Janković (Dec 2018 – June 2019)[7] Nedžad Žerić (July 2019 – June 2022)[8] Saša Krupljanin (June 2022 – January 2023)[9]
Alen Medović (January 2023 – present)[10]