SS Olympia was a steamship that served the northwest United States and Alaska during the Klondike Gold Rush.

In 1895, Dunbar Castle was sold to Fairfield Ship Building and Engineering Co. and renamed SS Olympia.

In 1898, she operated with the North America Mail Steamship Company of Tacoma, Washington.

On 10 December 1910, Olympia ran aground on Bligh Reef off Alaska′s Prince William Sound and sank without loss of life.

Following the sinking, steamboat inspectors accused Captain Daniels, in command of Olympia when she ran aground, of "unskillful navigation.