Prince Kacho Hiroatsu (???????, Kacho no miya Hiroatsu Shinno, 18 January 1875 – 15 February 1883) of Japan, was the second head of the Kacho-no-miya collateral branch of the Japanese imperial family.
Prince Kacho Hiroatsu was the son of Prince Kacho Hirotsune, and succeeded his father as head of the Kacho-no-miya house on 25 May 1876.
Due to his very young age, he was officially adopted by Emperor Meiji.
Of weak constitution, Prince Hiroatsu died on 15 February 1883 at age eight.
To prevent the Kacho-no-miya line from becoming extinct, Emperor Meiji assigned Prince Fushimi Hiroyasu to succeed to the title in 1883.