Vojnović Brdo is located in the municipality Krnjak, in Karlovac County at an elevation of 167 meters above sea level and it covers the area of 2.38 km² (0.92 sq. miles). According to the 2011 census report, there were only nine inhabitants left. It is entirely populated by Serbs. Nearby places: Trupinjak, Perići, Mala Crkvina, Jasnić Brdo, Burić Selo, Keserov Potok, Budačka Rijeka, Gornji Budački, Klupica and Johovo.