Idina Menzel Elsa (voice) Kristen Bell Anna (voice) Josh Gad Olaf (voice) Jonathan Groff Kristoff / Sven / Reindeers (voice) Evan Rachel Wood Iduna (voice) Sterling K. Brown Mattias (voice) Alfred Molina Agnarr (voice) Rachel Matthews Honeymaren (voice) Jason Ritter Ryder (voice) Martha Plimpton Yelena (voice) Ciarán Hinds Pabbie (voice) Jeremy Sisto King Runeard (voice) Stephen J. Anderson Kai (voice) Paul Briggs Marshmallow (voice) Hadley Gannaway Young Anna (voice) Mattea Conforti Young Elsa (voice) Aurora Aksnes The Voice (voice) Alan Tudyk Duke of Weselton (Ahtohallan Voice) (voice) Santino Fontana Hans (Ahtohallan Voice) (voice) Livvy Stubenrauch Young Anna (Ahtohallan Voice) (voice) Eva Bella Young Elsa (Ahtohallan Voice) (voice) Jackson Stein Young Agnarr (voice) Delaney Rose Stein Young Iduna (voice) Alan Tudyk Guard / Northuldra Leader / Arendellian Soldier (voice) Isabella Acres Additional Voices (voice) June Christopher Additional Voices (voice) Jessica DiCicco Additional Voices (voice) Robin Atkin Downes Additional Voices (voice) Phil LaMarr Additional Voices (voice) Fred Tatasciore Additional Voices (voice) Kari Wahlgren Additional Voices (voice) Dany Boon Olaf (French Voice)