I-180 was a Kaidai-class submarine (KD7 Type) of the Imperial Japanese Navy during World War II. Ordered in 1939 under the 4th Naval Armaments Supplement Programme, she was laid down at the Yokosuka Naval Arsenal on 17 April 1941 as I-80. Launched on 7 February 1942, she was renumbered I-180 on 20 May 1942, and completed on 15 January 1943.