The Kyburg family was a noble family of grafen (counts) in the Duchy of Swabia, a cadet line of the counts of Dillingen, who in the late 12th and early 13th centuries ruled the County of Kyburg, corresponding to much of what is now Northeastern Switzerland.

The Counts of Dillingen were a Swabian comital family of the Hupaldinger (Hucpaldinger) dynasty during AD 955–1286.