| Lierde | |
| Picture-Legend: | Lierde town hall |
| Map: | Lierde East-Flanders Belgium Map.svg |
| Map-Legend: | Location of Lierde in East Flanders |
| Arms: | Blason ville be Lierde.svg |
| Flag: | Flag of Lierde.svg |
| Arrondissement: | Oudenaarde |
| Nis: | 45063 |
| Mayor: | Jurgen Soetens (Voor Lierde) |
| Majority: | Voor Lierde, De 3de partij |
| Postal-Codes: | 9570-9571-9572 |
| Telephone-Area: | 055-054 |
| Web: | www.lierde.be |
| Coordinates: | 50.8°N 52°W |
Lierde (in Dutch; Flemish pronounced as /ˈliːrdə/) is a municipality located in the Flemish Ardennes, the hilly southern part of the Belgian province of East Flanders in the Denderstreek. The municipality comprises the towns of Deftinge, Hemelveerdegem, Sint-Maria-Lierde and Sint-Martens-Lierde. In 2021, Lierde had a total population of 6,626. The total area is 26.13 km².[1] Lierde borders to Brakel, Zottegem, Herzele and Geraardsbergen. Lierde is known for the Ronde van vlaanderen, a bike race where cyclists climb all the hills of the Flemish Ardennes.