Kasagi was an Unryū-class aircraft carrier built for the Imperial Japanese Navy during the second world war. Although launched, she was never completed.
Kasagi was laid down on 14 April 1943 and launched on 19 October 1944. Construction stopped on 1 April 1945 when she was 84% complete. Kasagi was scrapped between 1 September 1946–31 December 1947.