If they are acting in the same production they are called a cast.
The cast of Casting - 2002 includes: Rosa Barenfeld
Type-casting.
The cast of The Last Casting - 2011 includes: Carmen Isidoro as Betty
The cast of Anales Casting - 2001 includes: Monja Nero Brandy Sara Canyon
The cast of Casting Session - 2005 includes: Charlie Hunnam as himself Katey Sagal as herself
The song Who am I is sung by the singing group called Casting Crowns.
multi-casting
The cast of The Casting Director - 2009 includes: Judy Greer as The Casting Agent
chorus
The cast of Casting - 2006 includes: Coke Viaga
The cast of Casting - 2008 includes: Felipe Cabezas
The cast of Casting - 1999 includes: Eddy Letexier
The cast of Casting - 2002 includes: Rosa Barenfeld
casting directors cast actors for movies.
The casting director
Type-casting.
Troupe