John Henry Wigmore

Law educator, born in San Francisco, California, USA. He studied at Harvard, was fluent in many languages, and taught law in Tokyo (1889–92). In 1893 he became a law professor at Northwestern University, becoming dean of its law school (1901–29). He was noted for his prolific legal writings, chief of which is Treatise on the Anglo-American System of Evidence (10 vols, 1904–5; 3rd edn 1940). He was a founder and first president of the American Institute of Criminal Law and Criminology (1909–10).

John Henry Wigmore (4 March 1863 – 20 April 1943) was an American jurist and expert in the law of evidence.

Born in San Francisco, son of John and Harriet Joyner Wigmore, he attended Harvard and earned the degrees AB in 1883, AM in 1884, and LLB in 1887.

Wigmore's evidence rules are still used by many U.S. courts, including the U.S. District Court for the District of Columbia. The Wigmore rules might conflict with the new Federal Rules of Civil Procedure, which endorse so called "claw-back" agreements, under which a producing party can assert privilege over evidence after it has been produced.

In the 1880s Wigmore was also a leader for election law reform issues such as the secret voting method, and fair ballot access laws.

He also developed a graphical method for analysis of evidence known as the Wigmore chart.