St. John's University is a private Roman Catholic university in Queens, New York City, United States. It was founded in 1870 by the Congregation of the Mission with a mission to provide the youth of New York with a Catholic university education. Originally located in the Brooklyn borough of New York City, the flagship campus was moved to its current location in the Queens borough during the 1950s. St. John's has an additional New York City campus in Manhattan. The university's Staten Island campus closed in May of 2024. Additionally, the university has international campuses located in Rome, Italy; Paris, France; and Limerick, Ireland.