Andrew Cunningham McLaughlin (February 14, 1861 in Beardstown, Illinois – September 24, 1947) was an American historian born to Scottish immigrant parents.
McLaughlin received his bachelor's and law degrees from the University of Michigan. By 1903 he was a respected historian and in 1914 he was named President of the American Historical Association. He became an advocate for historians giving guidance on world events and toured the United Kingdom to support its efforts in World War I. McLaughlin specialized in American constitutional history. His first major book, Confederation and Constitution, 1783-1789 (1907), was a volume in the American Nation series planned and edited by Albert Bushnell Hart of Harvard University. His other major works include The Courts, the Constitution, and Parties: Studiers in Constitutional History and Politics (1912) and The Foundations of American Constitutionalism (1932), based on the Anson G. Phelps Lectures delivered at New York University. His magnum opus, A Constitutional History of the United States won the 1936 Pulitzer Prize for History. Among the many students whom he mentored at the University of Chicago was the historian Henry Steele Commager.
Personal life 
His brother, James C. McLaughlin, was a U.S. Representative from Michigan from 1907-1932. He was the son-in-law of longtime University of Michigan president James B. Angell, having married Angell's daughter Lois in 1890. His daughter Constance McLaughlin Green was also a Pulitzer Prize-winning historian who specialized in the history of Washington, D.C., and his son James Angell MacLachlan was a Harvard Law School professor and co-founder of the National Bankruptcy Conference.
- McLaughlin, Andrew C. Confederation and Constitution, 1783-1789 (New York: Harper, 1907, and later reprint editions) (American Nation series).
- McLaughlin, Andrew C. The Courts, the Constitution, and Parties: Studies in Constitutional History and Politics (Chicago: University of Chicago Press, 1912).
- McLaughlin, Andrew C. The Foundations of American Constitutionalism (New York: New York University Press, 1932, and later reprint editions) (Anson G,. Phelps Lectures at New York University)
- McLaughlin, Andrew C. A Constitutional History of the United States (New York: D. Appleton Century Company, 1935) online version ISBN 978-1-931313-31-5
- He and Albert Bushnell Hart co-edited Cyclopedia of American Government (1914).