Brod-Posavina County () is the southern Slavonian county in Croatia. Its center is the city of Slavonski Brod and it spreads along the left bank of the Sava river, hence the name Posavina. Other notable towns include Nova Gradiška.
Geography
The Brod-Posavina County borders on the Sisak-Moslavina County in the west, Požega-Slavonia County in the north, Osijek-Baranja County in the northeast, and Vukovar-Syrmia County in the east.
Administrative divisions
Brod-Posavina County is further divided into 2 towns (grad, pl. gradovi) and 26 municipalities (općina, pl. općine).
{| class="wikitable sortable"
|+Towns
|-
! style=width:8.5em | Town
!Population<br><small>(2021 census)</small>
|-
| Slavonski Brod
| align="right" |49,891
|-
| Nova Gradiška
| align="right" |11,690
|}
{| class="wikitable sortable"
|+Municipalities
|-
! style=width:8.5em | Municipality
! Population<br><small>(2021 census)</small>
As of the 2011 census, the county had 158,575 residents. The population density was 78 people per km<sup>2</sup>.
Politics
County Assembly
thumb|Brod-Posavina County Headquarters
Following the 2025 Croatian local elections the Assembly of the Brod-Posavina County was composed of 37 elected representatives. Out of a total of 125,464 eligible voters 52,433 (41.79%) participated in the elections and 52,413 (41.78%) submitted their ballots. During the 2023 Croatian national minorities councils and representatives elections, Roma and Serbs of Croatia elected 25 minority members of councils for Brod-Posavina County while Albanians, Bosniaks and Ukrainians of Croatia elected individual representatives. Certain municipalities, towns or cities in the county elected their own local minority councils and representatives as well.