| Type: | Stadt |
| Image Coa: | DEU Dierdorf COA.svg |
| Coordinates: | 50.5489°N 7.6594°W |
| Image Plan: | Dierdorf in NR.svg |
| State: | Rheinland-Pfalz |
| District: | Neuwied |
| Verbandsgemeinde: | Dierdorf |
| Elevation: | 240 |
| Area: | 31.90 |
| Postal Code: | 56269 |
| Area Code: | 02689 |
| Licence: | NR |
| Gemeindeschlüssel: | 07 1 38 012 |
| Divisions: | 5 |
| Website: | www.dierdorf.de |
| Mayor: | Thomas Vis[1] |
| Leader Term: | 2019 - 24 |
| Party: | CDU |
Dierdorf is a town in the district of Neuwied, in Rhineland-Palatinate, Germany. It is situated in the Westerwald, approx. 20 km northeast of Neuwied, and 20 km north of Koblenz.
Dierdorf is the seat of the Verbandsgemeinde ("collective municipality") Dierdorf.
The elections in May 2014 showed the following results.
| Election | SPD | CDU | FDP | Free Voters | Total | |
|---|---|---|---|---|---|---|
| 2014 | 6 | 12 | 2 | 2 | 22 Seats | |
| 2009 | 8 | 9 | 3 | 2 | 22 Seats |
Dierdorf is the sister city of Fountain Hills (USA), Courtisols (France) and Krotoszyn (Poland).