| Brzeziny County | |
| Native Name: | Powiat brzeziński |
| Settlement Type: | County |
| Total Type: | Total |
| Image Map1: | POL powiat brzeziński.svg |
| Map Caption1: | Division into gminas |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Łódź |
| Area Total Km2: | 358.51 |
| Population Total: | 30600 |
| Population As Of: | 2006 |
| Population Density Km2: | auto |
| Population Urban: | 12373 |
| Population Blank1 Title: | Rural |
| Population Blank1: | 18227 |
| Coor Pinpoint: | Brzeziny |
| Coordinates: | 51.8°N 64°W |
| Seat: | Brzeziny |
| Parts Type: | Gminas |
| Parts: | Total 5 (incl. 1 urban) |
| P1: | Brzeziny |
| P2: | Gmina Brzeziny |
| P3: | Gmina Dmosin |
| P4: | Gmina Jeżów |
| P5: | Gmina Rogów |
| Blank Name: | Car plates |
| Blank Info: | EBR |
| Website: | http://www.powiat-brzeziny.pl/ |
Brzeziny County (Polish: powiat brzeziński) is a unit of territorial administration and local government (powiat) in Łódź Voivodeship, central Poland. It was created in 2002 out of the north-eastern part of Łódź East County. Its administrative seat and only town is Brzeziny, which lies 20km (10miles) east of the regional capital Łódź.
The county covers an area of 358.51km2. As of 2006 its total population is 30,600, out of which the population of Brzeziny is 12,373 and the rural population is 18,227.
Brzeziny County is bordered by Łowicz County to the north, Skierniewice County to the east, Tomaszów Mazowiecki County to the south-east, Łódź East County to the south and west, and Zgierz County to the north-west.
The county is subdivided into five gminas (one urban and four rural). These are listed in the following table, in descending order of population.
| Gmina | Type | Area (km2) | Population (2006) | Seat |
| Brzeziny | urban | 29.6 | 12,373 | |
| Gmina Brzeziny | rural | 106.4 | 5,276 | Brzeziny * |
| Gmina Dmosin | rural | 100.5 | 4,671 | Dmosin |
| Gmina Rogów | rural | 66.2 | 4,647 | Rogów |
| Gmina Jeżów | rural | 63.8 | 3,633 | Jeżów |
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