Amy Jean Klobuchar (pronounced /ˈkloʊbəʃɑr/, born May 25, 1960) is the senior United States Senator from Minnesota. She is a member of the Minnesota Democratic-Farmer-Labor Party, an affiliate of the Democratic Party. She is the first elected female senator from Minnesota and is one of seventeen female senators serving in the 111th United States Congress.

Formerly county attorney of Hennepin County, Klobuchar was the chief prosecutor for the most populous county in Minnesota. She was a legal adviser to former U.S. Vice President Walter Mondale and partner in two prominent law firms. She has been cited by the New York Times as one of the seventeen women most likely to become the first female President of the United States and by MSNBC as a possible nominee to the U.S. Supreme Court.

Klobuchar served as Minnesota's only senator between January 3, 2009 and July 7, 2009, due to the contested senatorial election in Minnesota the previous year.