A spacious state-of-art auditorium (91' ft. X 51'3"ft.) "Prasant Kumar Bose Memorial Hall", fully air-conditioned, dedicated to the memory of late Principal Acharya P.K.Bose has been set up at the entire basement area of the new building. The hall is well equipped with high end audio & lighting and projection equipments and can accommodate around 500 viewers at a time.
The College organizes different seminar/symposiums of different departments in the auditorium. Also, the annual cultural programme 'Expression', the commencement of spring festival 'Basanta Utsav', 'Freshers' Welcome' etc organized by the students' union are held in the auditorium.
The Annual General Body meeting of Bangabasi College alumni Association is held in the auditorium.
The college authority also let out the auditorium for coveters of different non-profit organization.