| Biankouma Department | |
| Native Name: | Département de Biankouma |
| Native Name Lang: | fr |
| Settlement Type: | Department |
| Subdivision Type: | Country |
| Subdivision Type1: | District |
| Subdivision Name1: | Montagnes |
| Subdivision Type2: | Region |
| Subdivision Name2: | Tonkpi |
| Seat Type: | Departmental seat |
| Seat: | Biankouma |
| Established Date: | Established as a first-level subdivision |
| Established Title: | 1969 |
| Established Date1: | Converted to a second-level subdivision |
| Established Title1: | 1997 |
| Established Date2: | Converted to a third-level subdivision |
| Established Title2: | 2011 |
| Established Date3: | Divided to create Sipilou Dept |
| Established Title3: | 2012 |
| Government Footnotes: | [1] |
| Leader Title: | Prefect |
| Leader Name: | N'Guessan N'Dri |
| Unit Pref: | Metric |
| Area Footnotes: | [2] |
| Area Total Km2: | 3900 |
| Population Footnotes: | [3] |
| Population Total: | 238,714 |
| Population As Of: | 2021 census |
| Population Density Km2: | auto |
| Timezone: | GMT |
| Utc Offset: | +0 |
Biankouma Department is a department of Tonkpi Region in Montagnes District, Ivory Coast. In 2021, its population was 238,714 and its seat is the settlement of Biankouma. The sub-prefectures of the department are Biankouma, Blapleu, Gbangbégouiné, Gbonné, Gouiné, Kpata, and Santa.
Biankouma Department was created in 1969 as one of the 24 new departments that were created to take the place of the six departments that were being abolished. It was created from territory that was formerly part of Ouest Department.
In 1997, regions were introduced as new first-level subdivisions of Ivory Coast; as a result, all departments were converted into second-level subdivisions. Biankouma Department was included in Dix-Huit Montagnes Region.
In 2011, districts were introduced as new first-level subdivisions of Ivory Coast. At the same time, regions were reorganised and became second-level subdivisions and all departments were converted into third-level subdivisions. At this time, Biankouma Department became part of Tonkpi Region in Montagnes District.
The territory of Biankouma Department was unchanged until 2012, when two sub-prefectures were split-off to create Sipilou Department.[4]