| Native Name: | Grafschaft (Fürstentum) Waldburg-Waldsee |
| Conventional Long Name: | County (Principality) of Waldburg-Waldsee |
| Common Name: | Waldburg-Waldsee |
| Era: | Middle Ages |
| Status: | Vassal |
| Empire: | Holy Roman Empire |
| Government Type: | Principality |
| Year Start: | 1667 |
| Year End: | 1806 |
| Event Start: | Partitioned from Waldburg-Wolfegg |
| Event1: | Annexed Wolfegg |
| Date Event1: | 1798 |
| Event2: | Raised to principality |
| Date Event2: | 1803 |
| Event End: | Mediatised to Kgdm Württemberg |
| P1: | Waldburg-Wolfegg |
| S1: | Kingdom of Württemberg |
| Flag S1: | Flagge Königreich Württemberg.svg |
| Capital: | Bad Waldsee |
| Common Languages: | Alemannic German |
Waldburg-Waldsee was a County and later Principality within Holy Roman Empire, ruled by the House of Waldburg, located in southeastern Baden-Württemberg, Germany, around Bad Waldsee.
Waldburg-Waldsee was a partition of Waldburg-Wolfegg. When the Wolfegg branch extinguished in 1798, the Waldsee branch inherited Wolfegg. Waldburg-Waldsee was a county prior to 1803, when it was raised to a principality shortly before being mediatised to Württemberg in 1806.[1] The castle of the princes of Waldburg-Waldsee lies in the town of Kißlegg.[2]
The Waldburg-Waldsee are one of five branches of the Waldburg family, the others being Waldburg-Waldburg, Walsdburg-Zei, Waldburg-Wolfeck, and Waldburg-Wurzach. By 1872, Waldburg, Wolfeck, and Waldsee merged into a single Waldburg-Waldsee branch. Zeil and Wurzach merged into a second branch.[3]