Blue envelope (law enforcement), a law enforcement initiative for autistic driver document storage and communication guidelines
Blue roof, a roof of a building that is designed explicitly to provide initial temporary water storage and then gradual release of stored water, typically rainfall
Blue School, a progressive independent school in New York City
Blue state, county, etc., a U.S. area with a tendency to elect Democrats
Case Blue, the German World War II plan for its 1942 summer offensive against the Soviet Union
USS Blue (DD-387), a Bagley-class destroyer in service from 1937 to 1942
USS Blue (DD-744), an Allen M. Sumner-class destroyer in service from 1944 to 1971
This disambiguation page lists articles associated with the title Blue. If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article.