Topic summary
Casting director

Extracted from the Wikipedia article Casting (performing arts).
Casting director
For major productions, the process of selecting actors for sometimes hundreds of speaking parts and roles often requires specialized staff. While the final decision remains with those in charge – such as the director, producer, artistic departments, and the overall production team – a casting director (or CD) is responsible for most of the day-to-day work involved in this process during pre-production. A casting director is often assisted by a casting associate; productions with large numbers of extras may also employ an extras casting director. In the production budget, casting personnel are considered part of the above-the-line staff and typically answer to the director.