group of people who participate in a show or encounter a work of art

An audience is a group of people that see, hear or otherwise experience the same thing. It may be many different kinds of thing, such as a play, a movie, a book, or a broadcast. Audience members participate in different ways in different kinds of art; some live performance events invite the audience to be part of the performance, while others allow only applause and criticism. Mass media seldom provide for audience participation.

Military audience

An audience at a sporting event are called spectators or a live audience