| Image Coa: | DEU Frellstedt COA.svg |
| Coordinates: | 52.2167°N 65°W |
| Image Plan: | Frellstedt in HE.svg |
| State: | Niedersachsen |
| District: | Helmstedt |
| Samtgemeinde: | Nord-Elm |
| Elevation: | 122 |
| Area: | 6.13 |
| Postal Code: | 38373 |
| Area Code: | 05355 |
| Licence: | HE |
| Gemeindeschlüssel: | 03 1 54 005 |
| Website: | www.samtgemeinde-nord-elm.de |
| Mayor: | Christian Buttler |
Frellstedt is a municipality in the district of Helmstedt, in Lower Saxony, Germany.