Iain Armitage is an American child actor. He is best known for Young Sheldon, a prequel to the sitcom The Big Bang Theory and the HBO miniseries Big Little Lies. He also appeared in the films The Glass Castle (2017) and Our Souls at Night (2017). His acting debut was in an episode of Law & Order: Special Victims Unit.

Iain Armitage plays as Sheldon Cooper in Young Sheldon.
Iain Armitage is the top #1 member of the cast and appears in 71 episodes.

Zoe Perry plays as Mary Cooper in Young Sheldon.
Zoe Perry is the top #2 member of the cast and appears in 71 episodes.

Lance Barber is an actor.

Lance Barber plays as George Cooper Sr. in Young Sheldon.
Lance Barber is the top #3 member of the cast and appears in 71 episodes.

Montana Jordan plays as Georgie Cooper in Young Sheldon.
Montana Jordan is the top #4 member of the cast and appears in 71 episodes.

Raegan Revord plays as Missy Cooper in Young Sheldon.
Raegan Revord is the top #5 member of the cast and appears in 71 episodes.

Annie Potts is an American film and television actress, best known for playing Mary Jo Shively, one of the leading roles in the television sitcom "Designing Women", as well as several supporting roles in features films such as "Ghostbusters", "Pretty in Pink", and "Jumpin' Jack Flash".

Annie Potts plays as Connie Tucker in Young Sheldon.
Annie Potts is the top #6 member of the cast and appears in 71 episodes.

Jim Parsons is an American television and film actor, best known for playing Sheldon Cooper in The Big Bang Theory.

Jim Parsons plays as Sheldon Cooper (voice) in Young Sheldon.
Jim Parsons is the top #7 member of the cast and appears in 71 episodes.

Matt Hobby plays as Jeff Difford in Young Sheldon.
Matt Hobby is the top #8 member of the cast and appears in 27 episodes.