USS Grosbeak (SP-566) was a Grosbeak-class patrol boat acquired by the U.S. Navy for the task of patrolling and defending America's harbors and coasts.

Grosbeak, built by Rice Brothers, Boothbay, Maine, was acquired from her owner It.

C. Robbins, Hamilton, Massachusetts, 17 April 1917.

She served as a coastal patrol craft along the New England coast from Chatham, Massachusetts, to New London, Connecticut, during World War I.

Her name was struck from the Navy List in 1919 and she was sold to Clarence Kugler, Philadelphia, Pennsylvania, 21 March 1920.