Kozara National Park (Nacionalni park Kozara, Национални парк Козара) is a national park in Bosnia and Herzegovina that was proclaimed a protected national forest in 1967 by Josip Broz Tito. It is situated between the rivers Una, Sava, Sana and Vrbas, in the Republika Srpska entity of Bosnia and Herzegovina. These 33.75 square kilometers of dense forest and hilly meadows have earned the nickname 'Green Beauty of Krajina'.
Kozara is a popular hunting ground, with a large 180 square kilometers area of the park open to regulated hunting of deer, pheasants, foxes, boars, hares, and ducks.
A smaller part of the park is designated for nature lovers. Walking, hiking, biking and herb picking are among the many activities in Kozara.
Kozara was also a former battleground during World War II. The Partisans intimate knowledge of Bosnia's rough terrain gave them an advantage over the newly occupying Nazi Germans.