Tomislavovac is located in the municipality Ston, in Dubrovnik-Neretva County at an elevation of 156 meters above sea level and it covers the area of 16.13 km² (6.23 sq. miles). According to the 2011 census report, there were 105 inhabitants. It is entirely populated by Croats. Nearby places: Putniković, Dubrava, Dančanje, Brijesta, Žuljana, Zabrđe, Sparagovići, Komarna, Popova Luka and Drače.