| Leszno County | |
| Native Name: | Powiat leszczyński |
| Settlement Type: | County |
| Total Type: | Total |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Greater Poland |
| Area Total Km2: | 804.65 |
| Population Total: | 58255 |
| Population As Of: | 2021 |
| Population Density Km2: | auto |
| Population Urban: | 19273 |
| Population Blank1 Title: | Rural |
| Population Blank1: | 38982 |
| Coor Pinpoint: | Leszno |
| Coordinates: | 51.85°N 50°W |
| Seat: | Leszno |
| Parts Type: | Gminas |
| Parts: | Total 7 |
| P1: | Gmina Krzemieniewo |
| P2: | Gmina Lipno |
| P3: | Gmina Osieczna |
| P4: | Gmina Rydzyna |
| P5: | Gmina Święciechowa |
| P6: | Gmina Wijewo |
| P7: | Gmina Włoszakowice |
| Blank Name: | Car plates |
| Blank Info: | PLE |
| Website: | http://www.powiat-leszczynski.pl |
Leszno County (pl|powiat leszczyński) 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 is the city of Leszno, although the city itself is not part of the county (it constitutes a separate city county). The only towns in Leszno County are Rydzyna, which lies 90NaN0 south-east of Leszno, and Osieczna, 100NaN0 north-east of Leszno.
The county covers an area of 804.65km2. As of 2021 its total population is 58,255, out of which the population of Rydzyna is 9,962, that of Osieczna is 9,311, and the rural population is 38,982.[1]
Apart from the city of Leszno, Leszno County is also bordered by Kościan County to the north, Gostyń County to the east, Rawicz County to the south-east, Góra County to the south, Wschowa County to the west, and Wolsztyn County to the north-west.
The county is subdivided into seven gminas (two urban-rural and five rural). These are listed in the following table, in descending order of population.
| Gmina | Type | Area (km2) | Population (2021) | Seat |
| Gmina Włoszakowice | rural | 127.2 | 9,788 | Włoszakowice |
| Gmina Osieczna | urban-rural | 128.7 | 9,311 | Osieczna |
| Gmina Krzemieniewo | rural | 113.4 | 8,255 | Krzemieniewo |
| Gmina Rydzyna | urban-rural | 135.6 | 9,962 | Rydzyna |
| Gmina Święciechowa | rural | 135.0 | 8,265 | Święciechowa |
| Gmina Lipno | rural | 103.4 | 8,814 | Lipno |
| Gmina Wijewo | rural | 61.4 | 3,860 | Wijewo |