| Image Coa: | Wappen Kamsdorf.png |
| Type: | Ortsteil |
| Municipality: | Unterwellenborn |
| Coordinates: | 50.6447°N 11.4447°W |
| State: | Thüringen |
| District: | Saalfeld-Rudolstadt |
| Elevation: | 325-400 |
| Area: | 6.90 |
| Population: | 2653 |
| Stand: | 2016-12-31 |
| Postal Code: | 07334 |
| Area Code: | 03671 |
| Licence: | SLF |
Kamsdorf is a village and a former municipality in the district Saalfeld-Rudolstadt, in Thuringia, Germany. Since July 2018, it is part of the municipality Unterwellenborn.
Within the German Empire (1871–1918), Kamsdorf was part of the Prussian Province of Saxony.