United States Attorney for the District of South Dakota
The United States Attorney for the District of South Dakota is the United States Attorney responsible for representing the federal government in the United States District Court for the District of South Dakota.
By statute, the U.S. Attorney is responsible for prosecuting both federal crimes and all serious crimes committed by adults in the District of South Dakota. Therefore, the U.S. Attorney for the South Dakota serves as both the federal prosecutor and as the local district attorney. The United States Attorney is Ron A. Parsons Jr.
List of U.S. Attorneys for the District of South Dakota
| No. | U.S. Attorney | Term of Office | Political Party | Law school | President |
| 23 | S. Wesley Clark | 1921-1926 | Republican | Read law under Thomas Sterling | Warren G. Harding |
| 24 | Olaf Eiden | 1926-1934 | Republican | University of Nebraska College of Law | Calvin Coolidge |
| 25 | George Philip | 1934-1947 | Democrat | University of Michigan Law School | Franklin D. Roosevelt |
| 26 | Leo P. Flynn | 1947-1953 | Democrat | University of South Dakota School of Law | Harry S. Truman |
| 27 | Clinton G. Richards | 1953-1961 | Republican | University of South Dakota School of Law | Dwight Eisenhower |
| 28 | Harold C. Doyle | 1961-1969 | Democrat | University of South Dakota School of Law | John F. Kennedy |
| 29 | William F. Clayton | 1969-1977 | Republican | University of South Dakota School of Law | Richard Nixon |
| 30 | David V. Vrooman | 1977-1978 | Democrat | University of South Dakota School of Law | Jimmy Carter |
| 31 | Robert D. Hiaring | 1978-1979 | Democratic | University of South Dakota School of Law | Jimmy Carter |
| 32 | Terry L. Pechota | 1979-1981 | Democratic | University of Iowa College of Law | Jimmy Carter |
| 33 | Jeffrey L. Viken | 1981 | Democrat | University of South Dakota School of Law | Jimmy Carter |
| 34 | Philip N. Hogen | 1981-1991 | Republican | University of South Dakota School of Law | Ronald Reagan |
| 35* | Kevin Schieffer | 1991-1993 | Republican | Georgetown Law Center | George H.W. Bush |
| 35 | Ted McBride | 1993 | Democrat | University of South Dakota School of Law | Bill Clinton |
| 36 | Karen Schreier | 1993-1999 | Democrat | St. Louis University School of Law | Bill Clinton |
| 37 | Ted McBride | 1999-2001 | Democrat | University of South Dakota School of Law | Bill Clinton |
| 38 | James E. McMahon | 2002-2005 | Republican | University of South Dakota School of Law | George W. Bush |
| 39 | Marty Jackley | 2006-2009 | Republican | University of South Dakota School of Law | George W. Bush |
| 40 | Brendan Johnson | 2009-2015 | Democrat | University of Virginia School of Law | Barack Obama |
| 41 | Randy Seiler | 2015-2017 | Democrat | University of South Dakota School of Law | Barack Obama |
| 42 | Ron A. Parsons Jr. | 2018-present | Republican | University of South Dakota School of Law | Donald Trump |