시즌 정규 출연진 7

1. 

   Johnny Galecki

   Leonard Hofstadter

2. 

   Jim Parsons

   Sheldon Cooper

3. 

   Kaley Cuoco

   Penny

4. 

   Simon Helberg

   Howard Wolowitz

5. 

   Kunal Nayyar

   Rajesh Koothrappali

6. 

   Melissa Rauch

   Bernadette Rostenkowski

7. 

   Mayim Bialik

   Amy Farrah Fowler

특별출연 3

1. 

   Peter Onorati

   Angelo

2. 

   Vernee Watson-Johnson

   Althea

3. 

   Carol Ann Susi

   Debbie Wolowitz (voice)

제작진 9