| Gmina Kostrzyn | |
| Other Name: | Kostrzyn Commune |
| Settlement Type: | Gmina |
| Total Type: | Total |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Greater Poland |
| Subdivision Type2: | County |
| Subdivision Name2: | Poznań County |
| Area Total Km2: | 154 |
| Population Total: | 15456 |
| Population As Of: | 2006 |
| Population Density Km2: | auto |
| Population Urban: | 8539 |
| Population Blank1 Title: | Rural |
| Population Blank1: | 6917 |
| Coor Pinpoint: | Kostrzyn |
| Coordinates: | 52.3942°N 17.2222°W |
| Seat: | Kostrzyn |
Gmina Kostrzyn is an urban-rural gmina (administrative district) in Poznań County, Greater Poland Voivodeship, in west-central Poland. Its seat is the town of Kostrzyn, which lies approximately 21km (13miles) east of the regional capital Poznań.
The gmina covers an area of 154km2, and as of 2006 its total population is 15,456 (out of which the population of Kostrzyn amounts to 8,539, and the population of the rural part of the gmina is 6,917).
Apart from the town of Kostrzyn, Gmina Kostrzyn contains the villages and settlements of Antonin, Brzeźno, Buszkówiec, Chorzałki, Czerlejnko, Czerlejno, Drzązgowo, Glinka Duchowna, Glinka Szlachecka, Gułtowy, Gwiazdowo, Iwno, Jagodno, Klony, Leśna Grobla, Libartowo, Ługowiny, Rujsca, Sanniki, Siedlec, Siedleczek, Siekierki Małe, Siekierki Wielkie, Skałowo, Sokolniki Drzązgowskie, Sokolniki Klonowskie, Strumiany, Tarnowo, Trzek, Węgierskie, Wiktorowo and Wróblewo.
Gmina Kostrzyn is bordered by the gminas of Dominowo, Kleszczewo, Nekla, Pobiedziska, Środa Wielkopolska and Swarzędz.