Fordham University is a private Jesuit research university in New York City, United States. Established in 1841, it is named after the Fordham neighborhood of the Bronx in which its original campus is located. Fordham is the oldest Catholic and Jesuit university in the northeastern United States and the third-oldest university in New York City.

Founded as St. John's College by John Hughes, then a coadjutor bishop of New York, the college was placed in the care of the Society of Jesus shortly thereafter, and has since become a Jesuit-affiliated independent school under a lay board of trustees. While governed independently of the church since 1969, every president of Fordham University between 1846 and 2022 was a Jesuit priest and the curriculum remains influenced by Jesuit educational principles.

Fordham enrolls over 16,000 students in ten constituent colleges, four of which are undergraduate and six of which are postgraduate, across three campuses in southern New York State: the Rose Hill campus in the Bronx, the Lincoln Center campus in Manhattan's Upper West Side, and the Westchester campus in West Harrison, New York. The university also maintains a study abroad center in London and field offices in Spain and South Africa. The university offers degrees in over 60 disciplines.

The university's athletic teams, the Rams, include a football team that boasted a win in the Sugar Bowl, two Pro Football Hall of Famers, two All-Americans, two Canadian Football League All-Stars, and numerous NFL players; the Rams also participated in history's first televised college football game in 1939 and history's first televised college basketball game in 1940. Fordham's baseball team played the first collegiate baseball game under modern rules in 1859, has fielded 56 major league players, and holds the record for the most NCAA Division I baseball victories in history.

Fordham's alumni and faculty include current President Donald Trump, U.S. Senators and representatives, four cardinals of the Catholic Church, several U.S. governors and ambassadors, a number of billionaires, two directors of the CIA, Academy Award and Emmy-winning actors, royalty, a foreign head of state, a White House Counsel, a vice chief of staff of the U.S. Army, a U.S. Postmaster General, a U.S. Attorney General, a President of the Federal Reserve Bank of New York, and the first female vice presidential candidate of a major political party in the United States.