Neil Harold Buchanan is an American economist, legal scholar, and professor.

From 2002 to 2003, Buchanan was a judicial clerk for the United States Court of Appeals for the Tenth Circuit in the chambers of Judge Robert H. Henry in Oklahoma City.

Buchanan's research focuses on the long-term tax and spending patterns of the federal government.

[1] Buchanan and his co-author, Michael C. Dorf of Cornell Law School, do research on the U.S. debt ceiling, especially its constitutional implications.

[8] According to reporting by the New York Times, the "final straw" that caused Buchanan to leave the University of Florida Levin College of Law for Toronto was policies initiated by Florida Governor Ron DeSantis creating "a review process for tenured faculty, which he viewed as the end of academic freedom.