Eloisa d'Etange / Mrs. Wolmar

The heroine, whose first love for St. Preux survives beneath her later identity as wife, mother, and organizer of Clarens.

St. Preux

Eloisa's tutor and lover, intellectually gifted but emotionally unstable, later a traveler and prospective family educator.

Clara / Mrs. Orbe

Eloisa's cousin, closest friend, mediator, and the most practical voice in the correspondence.

Mr. Wolmar

Eloisa's rational, observant husband, who knows her history and attempts to transform the former lovers' bond into friendship.

Lord B----

An English nobleman who becomes St. Preux's loyal friend, rescues him from despair, and tests his conduct.

Baron d'Etange

Eloisa's status-conscious father, whose opposition makes marriage to St. Preux impossible and pushes her toward Wolmar.

Baroness d'Etange

Eloisa's affectionate mother, devastated by discovering the secret correspondence.

Mr. Orbe

Clara's husband and a participant in the negotiations surrounding the lovers.

Fanny and Claud Anet

A vulnerable young woman and her beloved, whom Eloisa and St. Preux help establish together.

Harriot and the Wolmar children

The younger generation whose care, education, and rescue give Clarens its future-oriented purpose.