| 
  | Patrick Seitz | ... | Artanis (voice) | 
  | Travis Willingham | ... | Karax (voice) | 
  | Rachel Robinson | ... | Vorazun (voice) | 
  | Tricia Helfer | ... | Sarah Kerrigan / Queen of Blades (voice) | 
  | Fred Tatasciore | ... | Zeratul / Swann / Marauder (voice) | 
  | Robert Clotworthy | ... | Jim Raynor (voice) | 
  | Claudia Christian | ... | Rohanna (voice) (as Claudia Christain) | 
  | Marc Graue | ... | Fenix (voice) | 
  | John de Lancie | ... | Alarak (voice) | 
  | Nika Futterman | ... | Zagara / Zerg Queen (voice) | 
  | Rick D. Wasserman | ... | Amon (voice) | 
  | Mary Elizabeth McGlynn | ... | Talis (voice) | 
  | Michael Dorn | ... | Ouros / Xel'naga (voice) | 
  | Cree Summer | ... | Selendis (voice) | 
  | Josh Keaton | ... | Valerian Mengsk (voice) | 
  | Victor Brandt | ... | Alexi Stukov (voice) | 
  | Brian Bloom | ... | Matt Horner (voice) | 
  | April Stewart | ... | Additional Voices (voice) | 
  | Cam Clarke | ... | Additional Voices (voice) | 
  | Christopher Judge | ... | Additional Voices (voice) | 
  | Courtenay Taylor | ... | Additional Voices (voice) | 
  | Darin De Paul | ... | Additional Voices (voice) | 
  | David Boat | ... | Additional Voices (voice) | 
  | Dave Fouquette | ... | Additional Voices (voice) | 
  | Dave B. Mitchell | ... | Additional Voices (voice) | 
  | David Lodge | ... | Additional Voices (voice) | 
  | Debra Wilson | ... | Additional Voices (voice) | 
  | Ethan Sawyer | ... | Additional Voices (voice) | 
  | Gerald C. Rivers | ... | Additional Voices (voice) | 
  | Gideon Emery | ... | Tal'darim Executor (voice) | 
  | Grey Griffin | ... | Additional Voices (voice) | 
  | Guerin Barry | ... | Additional Voices (voice) | 
  | Ike Amadi | ... | Additional Voices (voice) | 
  | Imari Williams | ... | Additional Voices (voice) | 
  | Isaac C. Singleton Jr. | ... | Additional Voices (voice) | 
  | Jamieson Price | ... | Additional Voices (voice) | 
  | Jim Miller | ... | Additional Voices (voice) | 
  | John DiMaggio | ... | Additional Voices (voice) | 
  | Jonathan Adams | ... | Additional Voices (voice) | 
  | Julianne Buescher | ... | Additional Voices (voice) | 
  | Karen Strassman | ... | Additional Voices (voice) | 
  | Kari Wahlgren | ... | Additional Voices (voice) | 
  | Marc Worden | ... | Additional Voices (voice) | 
  | Mark Mintz | ... | Additional Voices (voice) | 
  | Maury Sterling | ... | Additional Voices (voice) | 
  | Max Mittelman | ... | Stone (voice) | 
  | Misty Lee | ... | Additional Voices (voice) | 
  | Neil Kaplan | ... | Additional Voices (voice) | 
  | Patrick Pinney | ... | Additional Voices (voice) (as Pat Pinney) | 
  | Paul Eiding | ... | Additional Voices (voice) | 
  | Peter Giles | ... | Additional Voices (voice) | 
  | Rachael MacFarlane | ... | Additional Voices (voice) | 
  | Robert Torti | ... | Additional Voices (voice) | 
  | Robin Atkin Downes | ... | Additional Voices (voice) | 
  | Stephen Stanton | ... | Mal'ash (voice) | 
  | Sumalee Montano | ... | Additional Voices (voice) | 
| Rest of cast listed alphabetically: | 
  | Charlet Chung | ... | D.Va (voice) | 
  | Marqus Kane | ... | Fenix Win'thar | 
  | Kiff VandenHeuvel | ... | Additional Voices (voice) | 
  | Anna Graves | ... | Dominion Officer (voice) (uncredited) |