| Burg-Sankt Michaelisdonn | |
| Native Name Lang: | de |
| Settlement Type: | Amt |
| Subdivision Type: | Country |
| Subdivision Name: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Schleswig-Holstein |
| Subdivision Type3: | District |
| Subdivision Name3: | Dithmarschen |
| Extinct Title: | Disestablished |
| Seat Type: | Region seat |
| Seat: | Burg |
| Leader Party: | Independent |
| Leader Title: | Amtsvorsteher |
| Leader Name: | Hauke Oeser |
| Area Total Km2: | 153,24 |
| Website: | amt-burg-st-michaelisdonn.de |
Burg-Sankt Michaelisdonn is an Amt ("collective municipality") in the district of Dithmarschen, in Schleswig-Holstein, Germany. Its seat is in Burg. It was formed on 1 January 2008 from the former Ämter Kirchspielslandgemeinde Burg-Süderhastedt and Kirchspielslandgemeinde Eddelak-Sankt Michaelisdonn.
The Amt Burg-Sankt Michaelisdonn consists of the following municipalities (with population in 2005):