The Dewey Medal was a military decoration of the United States Navy which was established by the United States Congress on June 3, 1898. The medal recognizes the leadership of Admiral of the Navy George Dewey, during the Spanish–American War, and the Sailors and Marines under his command.

The awards and decorations of the United States Armed Forces include various medals, service ribbons, ribbon devices, and specific badges which recognize military service and personal accomplishments of members of the U.S. Armed Forces. Such awards are a means to outwardly display the highlights of a service member's career.