시즌 정규 출연진 7

1. 

   Grant Gustin

   Barry Allen / The Flash

2. 

   Danielle Panabaker

   Dr. Caitlin Snow

3. 

   Rick Cosnett

   Eddie Thawne

4. 

   Carlos Valdes

   Cisco Ramon

5. 

   Tom Cavanagh

   Harrison Wells

6. 

   Jesse L. Martin

   Joe West

7. 

   Candice Patton

   Iris West

특별출연 12

1. 

   Clancy Brown

   General Wade Eiling

2. 

   Isabella Hofmann

   Clarissa Stein

3. 

   Bill Dow

   Quentin Quale

4. 

   Chase Masterson

   Sherry

5. Paul Griggs

   Jumper

6. 

   Herbert Duncanson

   Sergeant Bates

7. 

   Logan Williams

   Young Barry Allen

8. 

   Robbie Amell

   Ronnie Raymond / Firestorm

9. 

   Melise

   Linda Park

10. 

    Victor Garber

    Dr. Martin Stein

11. 

    Michelle Harrison

    Nora Allen

12. 

    Morena Baccarin

    Gideon (voice) (uncredited)

제작진 11