Richardson Auditorium in Alexander Hall is a historic 900-seat Richardsonian Romanesque performance hall at Princeton University in Princeton, New Jersey. It is home to both the Princeton University Orchestra and the Princeton Symphony Orchestra.

The Princeton University Orchestra (PUO) is the flagship symphony orchestra of Princeton University. The ensemble tours internationally and includes over 100 musicians, almost all of whom are undergraduates at the university. Every academic year, the Princeton University Orchestra holds eight or nine concerts in Richardson Auditorium in Alexander Hall.