| Image Coa: | DEU Marnheim COA.svg |
| Coordinates: | 49.6325°N 8.0408°W |
| Image Plan: | Marnheim in KIB.svg |
| State: | Rheinland-Pfalz |
| District: | Donnersbergkreis |
| Verbandsgemeinde: | Kirchheimbolanden |
| Elevation: | 207 |
| Area: | 9.97 |
| Postal Code: | 67297 |
| Area Code: | 06352, 06351 |
| Licence: | KIB |
| Gemeindeschlüssel: | 07 3 33 045 |
| Website: | www.kirchheimbolanden.de |
| Mayor: | Tim Mühlbach[1] |
| Leader Term: | 2019 - 24 |
Marnheim is a municipality in the Donnersbergkreis district, in Rhineland-Palatinate, Germany.