| Dour | |
| Map: | Dour Hainaut Belgium Map.svg |
| Map-Legend: | Location of Dour in Hainaut |
| Arms: | Blason ville BE Dour.svg |
| Flag: | Dour_Belgium.svg |
| Arrondissement: | Mons |
| Nis: | 53020 |
| Mayor: | Carlo Di Antonio (cdH) (Dour Demain) |
| Majority: | Dour Demain (cdH+MR+independents) |
| Postal-Codes: | 7370 |
| Telephone-Area: | 065 |
| Web: | www.communedour.be |
| Coordinates: | 50.4°N 50°W |
Dour (in French pronounced as /duʁ/; Doû) is a municipality of Wallonia located in the province of Hainaut, Belgium.
On 1 January 2006 the municipality had 16,810 inhabitants. The total area is 33.32 km2, giving a population density of 505 inhabitants per km2.
The municipality consists of the following districts: Blaugies, Dour, Élouges, and Wihéries.
Dour is often considered the western end of the sillon industriel, the former industrial backbone of Wallonia.
Since 1989, Dour has hosted the annual Dour Festival, a music festival covering various genres.