John Rosmer, of Rosmersholm, an ex-clergyman.

Rebecca West, one of his household, originally engaged as companion to the late Mrs. Rosmer.

Kroll, headmaster of the local grammar school, Rosmer's brother-in-law.

Ulrik Brendel.

Peter Mortensgaard.

Mrs. Helseth, Rosmer's housekeeper.

(The action takes place at Rosmersholm, an old manor-house in the neighbourhood of a small town on a fjord in western Norway.)