Un'yō (雲揚, Rising Cloud) was an iron-ribbed, wooden-hulled sail-and-steam gunboat of the early Meiji period, serving with the fledgling Imperial Japanese Navy.

On July 25, 1871, she was transferred to the Meiji government and assigned to the newly formed Imperial Japanese Navy, as the Un'yō .

After they were rebuffed in these negotiations, the Japanese government again dispatched Un'yō in September 1875 under the command of Inoue Yoshika to provoke a military response, in what was later termed the Ganghwa Island incident.

This and the following blockade eventually led to the Treaty of Ganghwa, which opened the Korean Peninsula to Japanese trade.

[citation needed] Un'yō was severely damaged when she ran aground at Atawa-Mura, on the coast of the Kii Peninsula, with the loss of 23 of her crew.