The Gausi or Gausian dynasty was a prominent Lombard ruling clan in the second half of the 6th century (547–572). They were Arian Christians and at odds with the Roman Catholic Church. Under their rule, the Lombards first migrated into the Italian peninsula.
The Gausi traced their lineage back to the Goths and they were a prominent family when, in 539, the tribe came under the rule of a minor, Walthari, and a Gausian, Audoin, was elected his regent. In 547, Audoin succeeded his charge, who died young of natural causes, and assumed the royal mantle by usurpation. While there remained living Lethings, relatives of the late king, Authari managed to secure his enthronement with little opposition. Audoin's son and successor, Alboin, led the Lombards into Italy in 569 and died without male heirs in 572 or 573. He had made the Lombard kings into Kings of Italy. His successor was Cleph of the Beleos clan.
- Jarnut, Jörg. Storia dei Longobardi. Turin: Einaudi, 2002.
- Rovagnati, Sergio. I Longobardi. Milan: Xenia, 2003.