| Official Name: | Dagana |
| Settlement Type: | Town and commune |
| Total Type: | commune |
| Mapsize: | 250px |
| Pushpin Map: | Senegal |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Saint-Louis Region |
| Unit Pref: | metric |
| Area Total Km2: | 5.526 |
| Population As Of: | 2023 census |
| Population Footnotes: | [1] |
| Population Total: | 26568 |
| Population Density Km2: | 4,808 |
| Timezone: | GMT |
| Utc Offset: | +0 |
| Coordinates: | 16.4833°N -51°W |
Dagana is a town and urban commune situated in the Saint-Louis Region of Senegal and it is the capital of the Dagana Department. Dagana shares its border with Mauritania.
The different ethnic groups in Dagana include Wolof, Fula (Fulah: Fulɓe; French: Peul or Peulh), and Moor.
In Season 5, Episode 3 of The Grand Tour, presenters Jeremy Clarkson, Richard Hammond and James May use discarded plastic bottles to float cars across the Senegal River at Dagana, as part of a homage to the Dakar Rally.