| Haaltert | |
| Picture-Legend: | Kerksken |
| Map: | Haaltert East-Flanders Belgium Map.svg |
| Map-Legend: | Location of Haaltert in East Flanders |
| Arms: | Blason ville be Haaltert.svg |
| Flag: | Flag of Haaltert.svg |
| Arrondissement: | Aalst |
| Nis: | 41024 |
| Mayor: | Veerle Baeyens (N-VA) |
| Postal-Codes: | 9450, 9451 |
| Telephone-Area: | 053 |
| Web: | www.haaltert.be |
| Coordinates: | 50.9°N 4°W |
Haaltert (in Dutch; Flemish pronounced as /ˈɦaːltərt/) is a municipality located in the Belgian province of East Flanders in the Denderstreek. The municipality comprises the towns of Denderhoutem, Haaltert proper, and . In 2021, Haaltert had a total population of 18,892. The total area is 30.30 km².[1] The current mayor of Haaltert is Veerle Baeyens, from the N-VA.
There is a 205 hectare nature reserve Den Dotter in the sub-municipalities of Aaigem (municipality Erpe-Mere) and Heldergem (municipality Haaltert). Haaltert is crossed by the Molenbeek-Ter Erpenbeek creek in Heldergem, Kerksken, and Haaltert.