The campus has two state-of-the-art auditoriums, both fully air-conditioned. The Small Auditorium, Raththinathammal Auditorium as the first one is called the oldest of the two, with a seating capacity for about 750 people. This auditorium plays host to internal student events, guest lectures and seminars, and the famed SBU Student General Body Meetings.

The Ranganatham Auditorium, the bigger of the two has a capacity for about 1,000 people and is known in music circles to have one of the finest acoustic systems in this region. The Ranganathan Auditorium hosts all major events ranging from the Annual Convocation, the Ethics Oration and Prize and Incentives Distribution Ceremonies conducting Placement Drives, Pre Placement Talks, Workshops, Seminars, Conferences, cultural festivals etc.

It has played host to a huge number of eminent personalities over the years.