| Image Coa: | DEU_Hellenthal_COA.svg |
| Coordinates: | 50.4833°N 32°W |
| Image Plan: | Hellenthal in EU.svg |
| State: | Nordrhein-Westfalen |
| Region: | Köln |
| District: | Euskirchen |
| Elevation: | 537 |
| Area: | 138 |
| Gemeindeschlüssel: | 05366020 |
| Postal Code: | 53940 |
| Area Code: | 02482, 02448 |
| Licence: | EU |
| Website: | www.hellenthal.de |
| Mayor: | Rudolf Westerburg[1] |
| Leader Term: | 2020 - 25 |
Hellenthal is a municipality in the district of Euskirchen in the state of North Rhine-Westphalia, Germany. It is located in the Eifel hills, near the border with Belgium, approx. 30 km south-west of Euskirchen and 40 km south-east of Aachen.
The village of Reifferscheid, part of the municipality of Hellenthal, is dominated by the ruins of Reifferscheid Castle, the seat of a medieval principality, see Salm. Another village within the municipality, Blumenthal, features ironworks industry area.