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 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.