| Gostyń County | |
| Native Name: | Powiat gostyński |
| Settlement Type: | County |
| Total Type: | Total |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Greater Poland |
| Area Total Km2: | 810.34 |
| Population Total: | 75683 |
| Population As Of: | 2006 |
| Population Density Km2: | auto |
| Population Urban: | 31945 |
| Population Blank1 Title: | Rural |
| Population Blank1: | 43738 |
| Coor Pinpoint: | Gostyń |
| Coordinates: | 51.8792°N 17.0125°W |
| Seat: | Gostyń |
| Parts Type: | Gminas |
| Parts: | Total 7 |
| P1: | Gmina Borek Wielkopolski |
| P2: | Gmina Gostyń |
| P3: | Gmina Krobia |
| P4: | Gmina Pępowo |
| P5: | Gmina Piaski |
| P6: | Gmina Pogorzela |
| P7: | Gmina Poniec |
| Blank Name: | Car plates |
| Blank Info: | PGS |
| Website: | http://www.powiat.gostyn.pl |
Gostyń County (Polish: powiat gostyński) is a unit of territorial administration and local government (powiat) in Greater Poland Voivodeship, west-central Poland. It came into being on January 1, 1999, as a result of the Polish local government reforms passed in 1998. Its administrative seat and largest town is Gostyń, which lies 59km (37miles) south of the regional capital Poznań. The county contains four other towns: Krobia, 110NaN0 south of Gostyń, Poniec, 200NaN0 south-west of Gostyń, Borek Wielkopolski, 170NaN0 east of Gostyń, and Pogorzela, 170NaN0 south-east of Gostyń.
The county covers an area of 810.34km2. As of 2006 its total population is 75,683, out of which the population of Gostyń is 20,588, that of Krobia is 4,022, that of Poniec is 2,875, that of Borek Wielkopolski is 2,486, that of Pogorzela is 1,974, and the rural population is 43,738.
Gostyń County is bordered by Śrem County to the north, Jarocin County to the east, Krotoszyn County to the south-east, Rawicz County to the south, Leszno County to the west and Kościan County to the north-west.
The county is subdivided into seven gminas (five urban-rural and two rural). These are listed in the following table, in descending order of population.
| Gmina | Type | Area (km2) | Population (2006) | Seat |
| Gmina Gostyń | urban-rural | 136.9 | 27,860 | Gostyń |
| Gmina Krobia | urban-rural | 129.6 | 12,792 | Krobia |
| Gmina Piaski | rural | 100.7 | 8,293 | Piaski |
| Gmina Poniec | urban-rural | 132.3 | 7,866 | Poniec |
| Gmina Borek Wielkopolski | urban-rural | 127.6 | 7,724 | Borek Wielkopolski |
| Gmina Pępowo | rural | 86.7 | 5,991 | Pępowo |
| Gmina Pogorzela | urban-rural | 96.5 | 5,157 | Pogorzela |