John Henry Wigmore (March 4, 1863 – April 20, 1943) was an American jurist and expert in the law of evidence.
After teaching law at Keio University in Tokyo (1889–1892), he was the dean of Northwestern Law School (1901 to 1929).
He is most known for his Treatise on the Anglo-American System of Evidence in Trials at Common Law (1904) and a graphical analysis method known as a Wigmore chart.