| Kolno County | |
| Native Name: | Powiat kolneński |
| Settlement Type: | County |
| Total Type: | Total |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Podlaskie |
| Area Total Km2: | 939.73 |
| Population Total: | 38,249 |
| Population As Of: | 2019 |
| Population Density Km2: | auto |
| Population Urban: | 12388 |
| Population Blank1 Title: | Rural |
| Population Blank1: | 25861 |
| Coor Pinpoint: | Kolno |
| Coordinates: | 53.4106°N 21.9339°W |
| Seat: | Kolno |
| Parts Type: | Gminas |
| Parts: | Total 6 (incl. 1 urban) |
| P1: | Kolno |
| P2: | Gmina Grabowo |
| P3: | Gmina Kolno |
| P4: | Gmina Mały Płock |
| P5: | Gmina Stawiski |
| P6: | Gmina Turośl |
| Blank Name: | Car plates |
| Blank Info: | BKL |
| Website: | http://www.powiatkolno.home.pl |
Kolno County (Polish: powiat kolneński) is a unit of territorial administration and local government (powiat) in Podlaskie Voivodeship, north-eastern 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 Kolno, which lies 89km (55miles) west of the regional capital Białystok. The only other town in the county is Stawiski, lying 160NaN0 east of Kolno.
The county covers an area of 939.73km2. As of 2019 its total population is 38,249, out of which the population of Kolno is 10,214, that of Stawiski is 2,174, and the rural population is 25,861.[1]
Kolno County is bordered by Pisz County to the north, Grajewo County to the north-east, Łomża County to the south and Ostrołęka County to the west.
The county is subdivided into six gminas (one urban, one urban-rural and four rural). These are listed in the following table, in descending order of population.
| Gmina | Type | Area (km2) | Population (2019) | Seat |
| Kolno | urban | 25.1 | 10,214 | |
| Gmina Kolno | rural | 282.1 | 8,601 | Kolno * |
| Gmina Stawiski | urban-rural | 165.6 | 6,105 | Stawiski |
| Gmina Turośl | rural | 198.4 | 5,113 | Turośl |
| Gmina Mały Płock | rural | 140.1 | 4,759 | Mały Płock |
| Gmina Grabowo | rural | 128.5 | 3,457 | Grabowo |
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