Philip Green Wright was an American economist who in 1928 first proposed the use of instrumental variables estimation as the earliest known solution to the identification problem in econometrics. In a book review published in 1915 he wrote one of the first explanations of the identification problem. His primary topic of applied research was tariff policy, and he wrote several books on the topic. He also wrote poetry, was a mentor to the poet and author Carl Sandburg, and published some of Sandburg's earliest works. Wright was the father of geneticist Sewall Wright.

Philip Quincy Wright was an American political scientist based at the University of Chicago known for his pioneering work and expertise in international law, international relations, and security studies. He headed the Causes of War project at the University of Chicago, which resulted in the prominent 1942 multi-volume book A Study of War.