| Image Coa: | Wappen von Dedenbach.png |
| Coordinates: | 50.4842°N 7.1767°W |
| Image Plan: | Dedenbach in AW.svg |
| State: | Rheinland-Pfalz |
| District: | Ahrweiler |
| Verbandsgemeinde: | Brohltal |
| Elevation: | 272 |
| Area: | 7.65 |
| Postal Code: | 53426 |
| Area Code: | 02646 |
| Licence: | AW |
| Gemeindeschlüssel: | 07 1 31 016 |
| Website: | www.gemeinde-dedenbach.de |
| Mayor: | Michael Freund[1] |
| Leader Term: | 2019 - 24 |
| Bürgermeistertitel: | Ortsbürgermeister |
Dedenbach is a municipality in the district of Ahrweiler, in Rhineland-Palatinate, Germany.