Swiss leader who was for a time the burgomaster and virtual dictator of Zürich. He supplied mercenaries for half the countries of Europe, making himself one of the richest and most powerful men in the Swiss Confederation.

After serving with the Zürich contingent in the defeat of Charles the Bold of Burgundy at Morat (June 22, 1476) and participating in the agreement of Stans (Dec. 22, 1481), which averted cantonal strife, Waldmann was elected burgomaster of Zürich in 1483. He soon undermined the traditional aristocratic power structure of the government and broadened its constitutional base. Acquiring riches and international influence through the sale of Swiss mercenaries—he received pensions for his services from the rulers of Savoy, Württemberg, and Hungary—Waldmann achieved nearly absolute local ascendancy; but his attempts to extend his power over other cantons met with resistance. His continuing pretensions gradually eroded his local support as well; finally, a faction of Zürich citizens, in an act of dubious legality, secured his arrest and subsequent execution.