Vincent Price
Simon Cordier
Nancy Kovack
Odette Mallotte
Elaine Devry
Jeanne D'Arville
Ian Wolfe
Pierre
Stephen Roberts
Captain Robert Rennedon
Lewis Martin
Father Raymonde
Mary Adams
Louise
Nelson Olmsted
Dr. Borman
Don Brodie
Marcel
Harvey Stephens
Louis Girot
Joseph Ruskin
The Horla (voice)