Ōtomo Sōrin , also known as Fujiwara no Yoshishige or Ōtomo Yoshishige, was a Japanese feudal lord (daimyō) of the Ōtomo clan, one of the few to have converted to Roman Catholicism (Christianity). The eldest son of Ōtomo Yoshiaki, he inherited the Funai Domain, on Kyūshū, Japan's southernmost main island, from his father. He is perhaps most significant for having appealed to Toyotomi Hideyoshi to intervene in Kyūshū against the Shimazu clan, thus spurring Hideyoshi's Kyūshū Campaign of 1587.

Ōtomo clan was a Japanese samurai family whose power stretched from the Kamakura period through the Sengoku period, spanning over 400 years. The clan's hereditary lands lay in Kyūshū.