| Image Coa: | DEU Rettersen COA.svg |
| Coordinates: | 50.7378°N 7.6944°W |
| Image Plan: | Rettersen in AK.svg |
| State: | Rheinland-Pfalz |
| District: | Altenkirchen |
| Verbandsgemeinde: | Altenkirchen-Flammersfeld |
| Elevation: | 285 |
| Area: | 3.21 |
| Postal Code: | 57635 |
| Area Code: | 02686 |
| Licence: | AK |
| Gemeindeschlüssel: | 07 1 32 094 |
| Website: | www.rettersen.de |
| Mayor: | Norbert Anhalt[1] |
| Leader Term: | 2019 - 24 |
Rettersen is a municipality in the district of Altenkirchen, in Rhineland-Palatinate, in western Germany.