Paul Howard Douglas was an American politician and Georgist economist. A member of the Democratic Party, he served as a U.S. Senator from Illinois for eighteen years, from 1949 to 1967. During his Senate career, he was a prominent member of the liberal coalition.
Born in Massachusetts and raised in Maine, Douglas graduated from Bowdoin College and Columbia University. He served as a professor of economics at several schools, most notably the University of Chicago, and earned a reputation as a reformer while a member of the Chicago City Council. During World War II, he served in the U.S. Marine Corps, rising to the rank of lieutenant colonel and becoming known as a war hero.
He was married to Emily Taft Douglas, a U.S. Representative from Illinois's At-large district.