Susan Denberg is dubbed by Nikki Van der Zyl because Denberg's Austrian accent was considered too strong.
Where Hammer's previous Frankenstein films were concerned with the physical aspects of the Baron's work, the interest here is in the metaphysical dimensions of life, such as the question of the soul, and its relationship to the body.
We are never told in which country the film is set, but the coat of arms on the coach is that of the Canton of Berne in Switzerland.
Frankenstein Created Woman was originally mooted as a follow-up to The Revenge of Frankenstein during its production in 1958, at a time when Roger Vadim's Et Dieu créa la femme (And God Created Woman) was successful (in fact, the film's original working title was And Then Frankenstein Created Woman). The film finally went into production at Bray Studios on 4 July 1966. It was Hammer's penultimate production there.