what is the collective noun of actors?

There isn't one universally accepted collective noun for actors.

However, some common and creative options include:

* A cast (this is the most common and straightforward option)

* A troupe (often used for a group of actors performing together regularly)

* A company (similar to troupe, but can be more formal)

* A gallery (suggests a diverse group of actors)

* A constellation (implies a group of talented actors)

Ultimately, the best collective noun depends on the context and the specific group of actors you are referring to.