was a Japanese "Type A" landing craft carrier operated by the Imperial Japanese Army (IJA).
It was initially planned as a "Type C" landing craft carrier like , but was replanned as a "Type A", without any flight deck and looking like a passenger ship.
Nigitsu Maru was a passenger liner of the same class as Akitsu Maru, taken over before completion and refitted by the Imperial Japanese Army into a "landing craft carrier" for landing operations. She was initially planned as a like her sister ship, where she would have been fitted with a flight deck in supplement to the landing facilities, but was later replanned as a "Type A". She received various facilities to handle Daihatsu-class landing craft, such as a well deck that could be flooded.
On 9 January 1944 Nigitsu Maru left Palau for Ujina in convoy Fu-901 as the sole ship escorted by the destroyer . She carried about 2,000 troops, mainly soldiers of the 12th Independent Engineer Regiment. Three days later off the Okino-Daito Island, southeast of Okinawa, Nigitsu Maru was attacked by the US submarine which fired four torpedoes from the surface. Two hit Nigitsu Maru which sank in eight minutes at . 456 soldiers, 83 gunners and 35 crewmen were killed. Amagiri picked up the survivors and landed them in Japan.