The United States postmaster general (PMG) is the chief executive officer of the United States Postal Service (USPS). The PMG is responsible for managing and directing the day-to-day operations of the agency.

Arthur Ellsworth Summerfield was a U.S. political figure who served as the 54th Postmaster General of the United States from 1953 to 1961. As Postmaster General, he was an ardent opponent of obscenity.