Adachi Kagemori (安達 景盛) (died June 11, 1248) was a Japanese warrior of the Adachi family and was a son of Morinaga. He served with Minamoto no Yoriie but became a monk when Minamoto no Sanetomo died. This did not stop him from joining the cause of the Hōjō family for the Jōkyū War of 1221, however. Hōjō Tsunetoki and Hōjō Tokiyori were his grandsons.