Alexander Meigs Haig, Jr. (born December 2, 1924) was a general in the United States Army who commanded an infantry division in Vietnam, then returned stateside in 1969 to become a member of Henry Kissinger's national security council staff. Haig helped South Vietnamese President Nguyen Van Thieu to negotiate the final cease-fire talks in 1972.

From 1973 until 1974, Haig served as Richard Nixon's White House Chief of Staff, during which he played a large "crisis management" role as the Watergate scandal unfolded.

From 1974 to 1979, Haig served as the Supreme Allied Commander of NATO.

He served as Ronald Reagan's Secretary of State until 1982. He received criticism in 1981, after the assassination attempt on Reagan, for asserting before reporters that "I'm in control here" as a result of Reagan's hospitalization, although in fact he was not in charge under the rules of constitutional succession, as laid out by the Twenty-fifth Amendment to the Constitution and by U.S. law.

A military hawk, his tenure as Secretary of State was often characterized by his clashes with the more moderate Defense Secretary, Caspar Weinberger.

Haig ran for the Republican Party nomination for President in 1988.

Preceded by: Edmund S. Muskie	United States Secretary of State	Succeeded by: George P. Shultz
Preceded by: H. R. Haldeman	White House Chief of Staff	Succeeded by: Donald Rumsfeld