The Huosi were one of the Uradel noble families in the stem duchy of Bavaria during the reign of the Agilolfing dynasty, mentioned in the 743 Lex Baiuvariorum.
Many abbeys in southern Bavaria like Benediktbeuern, Ilmmünster, Scharnitz, Schlehdorf and Tegernsee were founded in the 8th century by people who are believed to have been members of the Huosi. Several descendants held the office of a Bishop of Freising in the 9th century. An affiliation with the later Luitpolding dynasty is possible but not proven.