James McAvoyPatricia / Dennis / Hedwig / The Beast / Barry / Heinrich / Jade / Ian / Mary Reynolds / Norma / Jalin / Kat / B.T. / Kevin Wendell Crumb / Mr. Pritchard / Felida / Luke / Goddard / Samuel / Polly
Bruce WillisDavid Dunn / The Overseer
Samuel L. JacksonElijah Price / Mr. Glass
Sarah PaulsonDr. Ellie Staple
Anya Taylor-JoyCasey Cooke
Spencer Treat ClarkJoseph Dunn
Charlayne WoodardMrs. Price
Luke KirbyPierce
Adam David ThompsonDaryl
M. Night ShyamalanJai, Security Guard
Shannon Destiny RyanCheerleading Girl
Diana SilversCheerleading Girl
Nina WisnerCheerleading Girl
Kyli ZionCheerleading Girl
Serge DidenkoRonald, Powerful Young Man
Russell PosnerT, Skinny Camera Kid
Kimberly S. FairbanksAssistant Principal
Rosemary HowardPenelope Crumb
Bryan McElroyClarence Crumb
Owen VitulloYoung Kevin
William TurnerYoung Elijah
Johnny Hiram JamisonThirteen Year-Old Elijah (archive footage)
