Abel Parker Upshur (1790–1844) was an American lawyer, judge, and politician from Virginia.
He was active in Virginia state politics and later served as secretary of the Navy and secretary of state during the Whig administration of President John Tyler.
He was the pseudonymous author of An Exposition of the Virginia Resolutions of 1798, a vigorous defense of state nullification.
Ludwig von Mises: "Despots and democratic majorities are drunk with power. They must reluctantly admit that they are subject to the laws of nature. But they reject the very notion of economic law . . . economic history is a long record of government policies that failed because they were designed with a bold disregard for the laws of economics." - Austrian Economics: An Anthology