- Jack Nicholson as Jack Torrance
- Shelley Duvall as Wendy Torrance
- Danny Lloyd as Danny Torrance and the voice of Tony
- Scatman Crothers as Dick Hallorann
- Barry Nelson as Stuart Ullman
- Philip Stone as Delbert Grady
- Joe Turkel as Lloyd
- Anne Jackson as Doctor
- Tony Burton as Larry Durkin
- Lia Beldam as Young Woman In Bath
- Billie Gibson as Old Woman In Bath
- Barry Dennen as Bill Watson
- Lisa Burns as Grady Daughter #1
- Louise Burns as Grady Daughter #2
In the shorter European cut, all of the scenes involving Jackson and Burton are cut (although their names still appear in the credits). Dennen is on-screen in both versions of the film, albeit to a limited degree (and with no dialogue) in the shorter cut.
The actresses who played the ghosts of the murdered Grady daughters, Lisa and Louise Burns, are identical twins; however, the characters in the book and film script are merely sisters, not twins. In the film's dialogue, Mr. Ullman identifies them as "about eight and ten." Nonetheless, they are frequently referred to in discussions about the film as "the Grady twins."
The resemblance in the staging of the Grady girls and the "Twins" photograph by Diane Arbus has been noted both by Arbus' biographer, Patricia Bosworth, the Kubrick assistant who cast and coached them, Leon Vitali, and by numerous Kubrick critics. Although Kubrick both met Arbus personally and studied photography under her during his youthful days as photographer for Look magazine, Kubrick's widow says he did not deliberately model the Grady girls on Arbus' photograph, in spite of widespread attention to the resemblance.