Edinorog (Russian: Единорог) was an Uragan-class monitor built for the Imperial Russian Navy in the mid-1860s. The design was based on the American Passaic-class monitor, but was modified to suit Russian engines, guns and construction techniques. Spending her entire career with the Baltic Fleet, the ship was only active when the Gulf of Finland was not frozen, but very little is known about her service. She was struck from the Navy List in 1900, converted into a storage hulk for mines in 1912 and renamed Blokshiv No. 4. The ship survived World War II and was stricken in 1957, although her ultimate fate is unknown.