| Dzierżoniów County | |
| Native Name: | Powiat dzierżoniowski |
| Settlement Type: | County |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Lower Silesian |
| Seat: | Dzierżoniów |
| Parts Type: | Gminas |
| Parts: | Total 7 (incl. 4 urban) |
| P1: | Bielawa |
| P2: | Dzierżoniów |
| P3: | Gmina Pieszyce |
| P4: | Piława Górna |
| P5: | Gmina Dzierżoniów |
| P6: | Gmina Łagiewniki |
| P7: | Gmina Niemcza |
| Area Total Km2: | 478.3 |
| Total Type: | Total |
| Population As Of: | 2019-06-30[1] |
| Population Total: | 101118 |
| Population Density Km2: | auto |
| Population Urban: | 79710 |
| Population Blank1 Title: | Rural |
| Population Blank1: | 21408 |
| Blank Name: | Car plates |
| Blank Info: | DDZ |
| Website: | http://www.pow.dzierzoniow.pl |
Dzierżoniów County (pl|powiat dzierżoniowski) is a unit of territorial administration and local government (powiat) in Lower Silesian Voivodeship, south-western 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 town of Dzierżoniów, and it also contains four other towns: Bielawa, Niemcza, Pieszyce and Piława Górna. The county covers an area of 478.3km2.
As at 2019 the total population of the county is 101,118. This figure breaks down as follows: Dzierżoniów 33,239, Bielawa 29,971, Pieszyce 7,123, Piława Górna 6,412, Niemcza 2,965, rural areas 21,408.
Dzierżoniów County is bordered by Świdnica County to the north, Wrocław County to the north-east, Strzelin County to the east, Ząbkowice Śląskie County to the south-east, Kłodzko County to the south and Wałbrzych County to the west.
The county is subdivided into seven gminas (three urban, two urban-rural and two rural). These are listed in the following table, in descending order of population.
| Gmina | Type | Area (km2) | Population (2019) | Seat |
| Dzierżoniów | urban | 20.1 | 33,239 | |
| Bielawa | urban | 36.2 | 29,971 | |
| Gmina Pieszyce | urban-rural | 63.6 | 9,466 | Pieszyce |
| Gmina Dzierżoniów | rural | 142.1 | 9,114 | Dzierżoniów |
| Gmina Łagiewniki | rural | 124.4 | 7,443 | Łagiewniki |
| Piława Górna | urban | 20.9 | 6,412 | |
| Gmina Niemcza | urban-rural | 72.1 | 5,473 | Niemcza |
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