Such an actor is called an "extra." They are used in crowd scenes or where numbers of anonymous people are otherwise needed in a scene.
hamlet
An actor.Male or female: actor.
It is called a role, or a part. In films, the word part is used. The general term for the dialogue and stage actions for a play is script.
Mime/Pantomime
No, a mime is an actor. Many use the role of mime as part of their training.
An extra
A frickin canadian.
Generally an actor with no dialogue is called an extra.
A background extra is an actor without any speaking lines whose presence contributes to the ambiance of a scene.
The cast of Speaking Without Speaking - 2007 includes: Svetlana Kimbrough
An actor can perform as a mime in order to gain physical acting experience.
It would be hard to find any part of significance, such as getting a speaking line. However, there are opportunities to be a part of the background.
Actor is a noun.
Mike McGlone
Nicholas Briggs is the current voice actor.
No, Hitchcock made non-speaking cameos in many of his films but was never an actor in silent films.
Yo tengo un papel hablante = I have a speaking part Tu tienes/usted tiene un papel hablante = you (informal/formal) have a speaking part.