USS Western Star (ID-4210) was a cargo ship of the United States Navy that served during World War I and its immediate aftermath.

The Navy assigned her the naval registry identification number 4210 and commissioned her at Seattle on 28 August 1918 as USS Western Star (ID-4210).

[2][3] Assigned to the Naval Overseas Transportation Service, Western Star departed Seattle and steamed to Union Bay, British Columbia, Canada, where she arrived on 5 September 1918.

She loaded a cargo of coal and underwent a thorough search for bombs and other explosives before departing Union Bay on 15 September 1918 bound for Iquique, Chile.

Departing Caleta Buena on 4 November 1918, Western Star steamed via the Panama Canal to Savannah, Georgia, arriving there on 5 December 1918.