| Image Coa: | DEU Wewelsfleth COA.svg |
| Coordinates: | 53.8439°N 9.4014°W |
| Image Plan: | Wewelsfleth in IZ.png |
| State: | Schleswig-Holstein |
| District: | Steinburg |
| Amt: | Wilstermarsch |
| Elevation: | 1 |
| Area: | 24.54 |
| Postal Code: | 25599 |
| Area Code: | 04829 |
| Licence: | IZ |
| Gemeindeschlüssel: | 01 0 61 110 |
| Divisions: | 8 |
| Website: | www.wilstermarsch.de |
| Mayor: | Delf Bolten |
Wewelsfleth is a municipality in the district of Steinburg, in Schleswig-Holstein, Germany.