Elenco Principal da Temporada 9

1. 

   Grant Gustin

   Barry Allen / The Flash

2. 

   Candice Patton

   Iris West-Allen

3. 

   Danielle Panabaker

   Dr. Caitlin Snow / Killer Frost

4. 

   Danielle Nicolet

   Cecile Horton

5. 

   Carlos Valdes

   Cisco Ramon / Vibe

6. 

   Hartley Sawyer

   Ralph Dibny / Elongated Man

7. 

   Jesse L. Martin

   Joe West

8. 

   Jessica Parker Kennedy

   Nora West-Allen / XS

9. 

   Tom Cavanagh

   Harrison 'Sherloque' Wells

Convidados Especiais 6

1. 

   Kiana Madeira

   Spencer Young

2. Rob Compton

   Detective Rowell

3. 

   Derek Kwan

   Uniformed Cop

4. 

   Andy Nez

   Plant Foreman

5. 

   Klarc Jerome Wilson

   Officer Jones

6. 

   Chris Klein

   Orlin Dwyer / Cicada

Equipa Técnica 4