Miami University is a public research university in Oxford, Ohio, United States. Founded in 1809, it is the second-oldest university in Ohio and the tenth-oldest public university in the United States. The school's system comprises the main campus in Oxford, as well as regional campuses in nearby Hamilton, Middletown, and West Chester, Ohio. Miami also m…Miami University is a public research university in Oxford, Ohio, United States. Founded in 1809, it is the second-oldest university in Ohio and the tenth-oldest public university in the United States. The school's system comprises the main campus in Oxford, as well as regional campuses in nearby Hamilton, Middletown, and West Chester, Ohio. Miami also maintains an international boarding campus, the Dolibois European Center in Differdange, Luxembourg.