The House of Kyburg is a family of Grafen, or counts, from Zürich in Switzerland.
The family is one of the three most powerful noble families in the Swiss plateau beside the Habsburg and the House of Savoy during the 11th and 12th Centuries.
With the extinction of the male line in 1263, Rudolph of Habsburg lays claim to the Kyburg lands and annexes them to the Habsburg holdings, which marks the beginning of the Habsburg rise to power.