Naoji Doi (Japanese: 土井 直治, Doi Naoji) (March 26, 1894 – February 12, 1963) was a Rear Admiral in the Imperial Japanese Navy during World War II.

Naoji Doi was a member of the 43rd Class of the Imperial Japanese Naval Academy, ranking 24 out of 95 Cadets.

[1] When the United States Marines landed on Mindanao, they were aided by the regular and constable troops of the Philippine Commonwealth Army and Philippine Constabulary and pushed the Japanese back to the northern end of the island.

Naoji Doi and his troops fought until the end of the war on August 15.

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