USS Long (DD-209/DMS-12), named for John Davis Long (1838–1915), Secretary of the Navy from 1897 to 1902, was a Clemson-class destroyer of the United States Navy.

John Davis Long was an American lawyer, politician, and writer from Massachusetts. He was the 32nd governor of Massachusetts, serving from 1880 to 1883. He later served as the Secretary of the Navy from 1897 to 1902, a period that included the primarily naval Spanish–American War.