| Court Type: | district |
| Court Name: | United States District Court for the District of Wyoming |
| Abbreviation: | D. Wyo. |
| Seal: | District-Wyoming.png |
| Seal Size: | 150 |
| Map Image Name: | Wyoming Locator Map.PNG |
| Map Image Width: | 150 |
| Map Image Caption: | --> |
| Location: | Cheyenne |
| Location1: | Casper |
| Location2: | Mammoth |
| Location3: | Jackson |
| Location4: | Evanston |
| Location5: | Lander |
| Location6: | Sheridan |
| Appeals To: | Tenth Circuit |
| Established: | July 10, 1890 |
| Judges Assigned: | 3 |
| Chief: | Scott W. Skavdahl |
| Us Attorney: | Nicholas Vassallo (acting) |
| Us Marshal: | Randall P. Huff |
The United States District Court for the District of Wyoming (in case citations, D. Wyo.) is the federal district court whose jurisdiction comprises the state of Wyoming and those portions of Yellowstone National Park situated in Montana and Idaho;[1] it is the only federal court district that includes portions of more than one state, creating a possible "Zone of Death" where it would be difficult to prosecute crimes. The court has locations in Cheyenne and Casper.
Appeals from this court are heard by the United States Court of Appeals for the Tenth Circuit (except for patent claims and claims against the U.S. government under the Tucker Act, which are appealed to the Federal Circuit).
The United States Attorney's Office for the District of Wyoming represents the United States in civil and criminal litigation in the court. As of the acting United States attorney is Nicholas Vassallo.[2]
Law professor Brian C. Kalt has argued that it may be impossible to impanel a jury in compliance with the Vicinage Clause of the Sixth Amendment to the United States Constitution for a crime committed solely in the Idaho portion of Yellowstone National Park (and that it would be difficult to do so for a crime committed solely in the Montana portion).[3] This has been referred to as the Zone of Death.[4] [5]
U.S. attorneys for Wyoming including the Wyoming Territory:[6]
| Name | Term started | Term ended | Presidents served under | |
|---|---|---|---|---|
| Joseph M. Carey | 1869 | 1871 | Ulysses S. Grant | |
| John James Jenkins | 1876 | 1880 | Ulysses S. Grant and Rutherford B. Hayes | |
| Anthony C. Campbell | 1885 | 1890 | Grover Cleveland and Benjamin Harrison | |
| Gibson Clark | 1894 | 1898 | Grover Cleveland and William McKinley | |
| Benjamin M. Ausherman | 1898 | 1907 | William McKinley and Theodore Roosevelt | |
| Timothy F. Burke | 1907 | 1911 | Theodore Roosevelt and William Howard Taft | |
| Hillard S. Ridgely | 1911 | 1914 | William Howard Taft and Woodrow Wilson | |
| Charles L. Rigdon | 1914 | 1921 | Woodrow Wilson | |
| Albert D. Walton | 1921 | 1933 | Warren G. Harding, Calvin Coolidge and Herbert Hoover | |
| Carl L. Sackett | 1933 | 1949 | Franklin D. Roosevelt and Harry Truman | |
| John Coleman Pickett | 1949 | 1949 | Harry Truman | |
| John J. Hickey | 1949 | 1953 | Harry Truman | |
| John F. Raper | 1953 | 1961 | Dwight D. Eisenhower | |
| Robert N. Chaffin | 1961 | 1969 | John F. Kennedy and Lyndon B. Johnson | |
| Richard V. Thomas | 1969 | 1974 | Richard Nixon | |
| Clarence Addison Brimmer Jr. | 1974 | 1975 | Gerald Ford | |
| James P. Castberg | 1975 | 1977 | Gerald Ford | |
| Toshiro Suyematsu | 1977 | 1977 | Gerald Ford | |
| Charles E. Graves | 1977 | 1981 | Jimmy Carter | |
| Toshiro Suyematsu | 1981 | 1981 | Jimmy Carter | |
| Richard A. Stacy | 1981 | 1994 | Ronald Reagan, George H. W. Bush and Bill Clinton | |
| Dave Freudenthal | 1994 | 2001 | Bill Clinton and George W. Bush | |
| Matt Mead | 2001 | 2007 | George W. Bush | |
| John R. Green | 2007 | 2008 | George W. Bush | |
| Kelly H. Rankin | 2008 | 2009 | George W. Bush and Barack Obama | |
| Christopher A. Crofts | 2010 | 2017 | Barack Obama | |
| Mark Klaassen | 2017 | 2021 | Donald Trump and Joe Biden | |
| L. Robert Murray | 2021 | 2022 | Joe Biden | |
| Nicholas Vassallo[7] | 2022 | Present | Joe Biden |