The Uda Genji (宇多源氏) were the successful and powerful line of the Japanese Minamoto clan that were descended from Emperor Uda (宇多天皇).

Many of the famous Minamoto warriors, including Sasaki clan (佐々木氏), also known as Daimyō Kyōgoku clan (京極氏); Sasaki Nariyori (佐々木成頼), the founder of the Ōmi Genji clan (近江源氏); and Sasaki Yoshikiyo (佐々木義清), the founder of the Izumo Genji clan (出雲源氏) belong to this line.

The family is named after Emperor Uda, grandfather of Minamoto no Masazane (源雅信), patriarch of the Uda Genji (宇多源氏).

Emperor Uda was father of Imperial Prince Atsumi (敦實親王 Atsumi Shinnō) (892-966) - father of Minamoto no Masazane (源雅信) (920-993), founder of the Uda Genji, from whom the Uda Genji is descended.

The Shinto shrine connected closely with the clan is known as the Sasaki Shrine (沙沙貴神社 Sasaki Jinja).