시즌 정규 출연진 10

1. 

   Jesse Spencer

   Matthew 'Matt' Casey

2. 

   Taylor Kinney

   Kelly Severide

3. 

   Kara Killmer

   Sylvie Brett

4. 

   David Eigenberg

   Christopher Herrmann

5. 

   Yuriy Sardarov

   Brian 'Otis' Zvonecek

6. 

   Joe Miñoso

   Joe Cruz

7. 

   Miranda Rae Mayo

   Stella Kidd

8. 

   Christian Stolte

   Randy 'Mouch' McHolland

9. 

   Annie Ilonzeh

   Emily Foster

10. 

    Eamonn Walker

    Wallace Boden

특별출연 7

1. 

   Gordon Clapp

   Chaplain Orlovsky

2. 

   Norma Kuhling

   Ava Bekker

3. 

   Kate Villanova

   Naomi Graham

4. 

   Teddy Sears

   Kyle Sheffield

5. 

   Marlyne Barrett

   Maggie Lockwood

6. 

   Steven Boyer

   Jerry Gorsch

7. 

   Randy Flagler

   Harold Capp

제작진 2