Jun'yō (隼鷹, "Peregrine Falcon") was a Hiyō-class aircraft carrier of the Imperial Japanese Navy (IJN). She was laid down as the passenger liner Kashiwara Maru (橿原丸), but was purchased by the IJN in 1941 while still under construction and converted into an aircraft carrier. Completed in May 1942, the ship participated in the Aleutian Islands Campaign the following month and in several battles during the Guadalcanal campaign later in the year. Her aircraft were used from land bases during several battles in the New Guinea and Solomon Islands Campaigns.
Jun'yō was torpedoed in November 1943 and spent three months under repair. Several bombs damaged her during the Battle of the Philippine Sea in mid-1944, but quickly returned to service.