USS Zara (SP-133) was a steam yacht that was built in Scotland in 1890, passed through a number of British, Canadian and US owners, and ended up as a passenger steamship in Greece after the First World War.

In the latter part of the war she spent a year as an armed yacht in the United States Navy.

On 27 April 1917 the US Navy acquired her from Friedman, changed her name back to Zara, and commissioned her with the pennant number SP-133 at New York City on 22 May 1917.

Assigned to the section patrol in the 3rd Naval District, Zara cruised the waters of Long Island Sound for almost a year.

Zara was sold on 13 September 1919 to Atmoploia Stauroudi of Greece, who converted her into a passenger ship.