Aaron Burr, American colonel and politician, 3rd Vice President of the United States (died 1836)

Aaron Burr Jr. was an American politician, businessman, lawyer, and Founding Father who served as the third vice president of the United States from 1801 to 1805 during Thomas Jefferson's first presidential term. He founded the Manhattan Company on September 1, 1799. His personal and political conflict with Alexander Hamilton culminated in the Burr–Hamilton duel where Burr mortally wounded Hamilton. Burr was indicted for dueling, but all charges against him were dropped. The controversy ended his political career.

The vice president of the United States is the second-highest ranking office in the executive branch of the U.S. federal government, after the president of the United States, and ranks first in the presidential line of succession. The vice president is also an officer in the legislative branch, as the president of the Senate. In this capacity, the vice president is empowered to preside over the United States Senate, but may not vote except to cast a tie-breaking vote. The vice president is indirectly elected at the same time as the president to a four-year term of office by the people of the United States through the Electoral College, but the electoral votes are cast separately for these two offices. Following the passage in 1967 of the Twenty-fifth Amendment to the US Constitution, a vacancy in the office of vice president may be filled by presidential nomination and confirmation by a majority vote in both houses of Congress.