In general, an auditorium (from the Latin auditorium, a series of seats placed in a semicircular manner in the Roman amphitheater) is the space within a theater "Theater (performing art)"), a cinema, a concert hall, a school or university, or any other public space (even outdoors) where an audience (public) attends to listen to and/or observe a cultural event or presentation, or an educational, political, social, or scientific (show, concert, film, play, exam "Exam (student evaluation)"), recital, colloquium "Colloquium (meeting)"), public reading, performance, happening, party, rally, debate, conference, assembly, etc.).[1]​ In the specific case of cinemas, the number of auditoriums is usually expressed as the number of rooms.

By extension, the group of people who listen to or observe a performance is also called an audience, that is, the term is also applied to refer to the audience.

In the theatrical field, it is the building in which the opponent is to be seen from the front, and without using so many services such as stage, stage, side reliefs, warehouses and scenography workshops. What is necessary is good isoptics and acoustics.

Outdoors

They are generally located in public squares), parks and gardens; their function is to give the public a space where they can hold mass meetings, concerts and other civic and cultural events.

Of education

They are found in educational institutions; They are designed based on the economic resources and the level of teaching of the school, the capacity of the seats is calculated according to the number or percentage of students.

Municipal, state and national

They differ in the number of spectators and their geographical location.

Particular

They are spaces that are integrated into a certain type of building, serving small groups of workers, administrative staff, managers, visitors, etc.