Fujiwara no Yoshifusa (藤原 良房?, 804 – October 7, 872), also known as Somedono no Daijin or Shirakawa-dono, was a Japanese statesman, courtier and politician during the Heian period.
When Yoshifusa's grandson was enthroned as Emperor Seiwa, Yoshifusa was assumed the role of regent (sesshō) for the young monarch. He was the first sesshō in Japanese history who was not himself of imperial rank; and he was the first of a series of regents from the Fujiwara clan.
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