John Henry Gray (March 11, 1859 – April 4, 1946) was an American economist.
He was a professor of economics at Northwestern University, Carleton College, and the University of Minnesota.
In 1914, he served as president of the American Economic Association.A native of Charleston, Illinois, Gray earned his bachelor's degree from Harvard University in 1887.
He then pursued graduate education under Johannes Conrad at the University of Halle-Wittenberg in Germany, graduating with a PhD in 1892.
He was coauthor of The Valuation and Regulation of Public Utilities.