| Nakło County | |
| Native Name: | Powiat nakielski |
| Settlement Type: | County |
| Total Type: | Total |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Kuyavian-Pomeranian |
| Area Total Km2: | 1120.48 |
| Population Total: | 86449 |
| Population As Of: | 2006 |
| Population Density Km2: | auto |
| Population Urban: | 36844 |
| Population Blank1 Title: | Rural |
| Population Blank1: | 49605 |
| Coor Pinpoint: | Nakło nad Notecią |
| Coordinates: | 53.1403°N 17.5928°W |
| Seat: | Nakło nad Notecią |
| Parts Type: | Gminas |
| Parts: | Total 5 |
| P1: | Gmina Kcynia |
| P2: | Gmina Mrocza |
| P3: | Gmina Nakło nad Notecią |
| P4: | Gmina Sadki |
| P5: | Gmina Szubin |
| Blank Name: | Car plates |
| Blank Info: | CNA |
| Website: | http://www.powiat-nakielski.pl |
Nakło County (Polish: powiat nakielski) is a unit of territorial administration and local government (powiat) in Kuyavian-Pomeranian Voivodeship, north-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 and largest town is Nakło nad Notecią, which lies 280NaN0 west of Bydgoszcz and 700NaN0 west of Toruń. The county contains three other towns: Szubin, lying 180NaN0 south-east of Nakło nad Notecią, Kcynia, lying 180NaN0 south-west of Nakło nad Notecią, and Mrocza, 120NaN0 north of Nakło nad Notecią.
The county covers an area of 1120.48km2. As of 2006 its total population is 84,786, out of which the population of Nakło nad Notecią is 18,281, that of Szubin is 9,556, that of Kcynia is 4,657, that of Mrocza is 4,350, and the rural population is 49,605.
Nakło County is bordered by Sępólno County to the north, Bydgoszcz County to the east, Żnin County to the south, Wągrowiec County to the southwest and Piła County to the west.
The county is subdivided into five gminas (four urban-rural and one rural). These are listed in the following table, in descending order of population.
| Gmina | Type | Area (km2) | Population (2019) | Seat |
| Gmina Nakło nad Notecią | urban-rural | 187.0 | 31,789 | Nakło nad Notecią |
| Gmina Szubin | urban-rural | 332.1 | 24,756 | Szubin |
| Gmina Kcynia | urban-rural | 297.0 | 13,409 | Kcynia |
| Gmina Mrocza | urban-rural | 150.7 | 9,222 | Mrocza |
| Gmina Sadki | rural | 153.7 | 7,273 | Sadki |