Chumash Auditorium is the largest venue in the University Union and is commonly reserved for career fairs, banquets, guest speakers, live entertainment, and large student activities. The space is equipped with a full sound system and stage. An ASI Audio Visual Technician is available to assist with lighting and sound at all events.
At 9,228 square feet, the auditorium has a maximum occupancy of 996.
The auditorium can also be divided into three sections (see Chumash 204, 205, and 207) for simultaneous smaller events.