A dream that you are acting can mean that you are thinking about all of the different roles that you play in life.
You may dream about acting when you enter a new stage in life and take on a new role, for example, as an employee, a spouse or a parent.
Dreaming that you are acting in front of an audience can mean that you want your accomplishments to be acknowledged.
If you dream that someone you know is acting, you may feel that they are not being honest in waking life.