James Henry Davidson (June 18, 1858 – August 6, 1918) was a U.S. Representative from Wisconsin. Born in Colchester, New York, Davidson attended the public schools and Walton (New York) Academy. He taught school in Delaware and Sullivan Counties, New York. He graduated from the Albany Law School in 1884 and was admitted to the bar the same year. He moved to Green Lake County, Wisconsin, and commenced practice in Princeton, Wisconsin in 1887.