Which term refers to the main actors in a theatrical production?

The term that refers to the main actors in a theatrical production is "principals." In theatre, principals are the primary characters around whom the story revolves. They carry the main narrative arc and often have the most significant lines and character development throughout the performance. This term highlights their importance in conveying the theme, emotion, and dynamics of the story being told.

In contrast, supporting cast members play secondary roles that complement the principals, while background actors contribute to the scene's atmosphere but typically do not have significant or speaking parts. Extras, similarly, enhance the setting or provide a sense of place but are not critical to the main storyline. Understanding the distinction between these roles helps clarify the structure of a theatrical production and the various contributions that different actors make.