Randolph D. "Tex" Alles (born 1954) is an American law enforcement officer and government official who currently serves as the Deputy Under Secretary of Homeland Security for Management and the de facto head of the DHS Management Directorate, under the various titles of both Acting Under Secretary and Senior Official Performing the Duties of Under Secretary. He also served as the 25th Director of the United States Secret Service from April 2017 to May 2019, and previously as the acting deputy commissioner of U.S. Customs and Border Protection, as well as in the United States Marine Corps, in which he reached the rank of major general.