| Image Coa: | DEU St. Michaelisdonn COA.svg |
| Coordinates: | 53.9972°N 9.1219°W |
| Image Plan: | Sankt Michaelisdonn in HEI.PNG |
| State: | Schleswig-Holstein |
| District: | Dithmarschen |
| Amt: | Burg-Sankt Michaelisdonn |
| Elevation: | 3 |
| Area: | 23.06 |
| Postal Code: | 25693 |
| Area Code: | 04853 |
| Licence: | HEI |
| Gemeindeschlüssel: | 01 0 51 097 |
| Divisions: | 4 |
| Website: | www.amt-edd-stm.de |
| Mayor: | Volker Nielsen |
| Party: | CDU |
Sankt Michaelisdonn is a municipality in the district of Dithmarschen, in Schleswig-Holstein, Germany.