| Tonka | |
| Settlement Type: | Commune and town |
| Pushpin Map: | Mali |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in Mali |
| Subdivision Type: | Country |
| Subdivision Name: |  Mali |
| Subdivision Type1: | Region |
| Subdivision Name1: | Tombouctou Region |
| Subdivision Type2: | Cercle |
| Subdivision Name2: | Goundam Cercle |
| Area Footnotes: | [1] |
| Area Total Km2: | 1023 |
| Population As Of: | 2009 census |
| Population Footnotes: | [2] |
| Population Total: | 53438 |
| Population Density Km2: | auto |
| Population Blank1 Title: | Ethnicities |
| Utc Offset: | +0 |
| Coordinates: | 16.1339°N -3.7486°W |
Tonka is a town and commune of the Cercle of Goudam in the Tombouctou Region of Mali. The commune includes around 22 settlements. The commune lies to the north of the Niger River and includes Lake Oro, a seasonal lake that fills with water during the annual flood of the Niger River. The name 'Tonka' is derived from a Soninke language term for king or ruler.