| Type: | Ortsgemeinde |
| Dienethal | |
| Image Coa: | DEU Dienethal COA.svg |
| Coordinates: | 50.3044°N 7.778°W |
| Image Plan: | Dienethal in EMS.svg |
| State: | Rheinland-Pfalz |
| District: | Rhein-Lahn-Kreis |
| Verbandsgemeinde: | Bad Ems-Nassau |
| Elevation: | 150 |
| Area: | 1.39 |
| Postal Code: | 56379 |
| Area Code: | 02604 |
| Licence: | EMS, DIZ, GOH |
| Gemeindeschlüssel: | 07 1 41 027 |
| Website: | gemeinde-dienethal.de |
| Mayor: | Andreas Ritter[1] |
| Leader Term: | 2019 - 24 |
Dienethal is a municipality in the district of Rhein-Lahn, in Rhineland-Palatinate, in western Germany. It belongs to the association community of Bad Ems-Nassau.