Princeton University is a private research university located in Princeton, New Jersey, United States. The school is one of the eight universities of the Ivy League, and is one of the nine Colonial Colleges founded before the American Revolution.

Princeton provides undergraduate and graduate instruction in the humanities, social sciences, natural sciences, and engineering. Princeton does not offer professional schooling generally, but it does offer professional master's degrees (mostly through the Woodrow Wilson School of Public and International Affairs) and doctoral programs.

Founded in 1746 in Elizabeth, New Jersey, as the College of New Jersey, the university moved to Newark in 1747, then to Princeton in 1756 and was renamed Princeton University in 1896. (The present-day The College of New Jersey in nearby Ewing, New Jersey, is an unrelated institution.)