The Eternal Husband is a psychological novella by the acclaimed Russian author Fyodor Dostoyevsky. The plot revolves around the intense and complex relationship between Velchaninov and Trusotsky. Velchaninov, the protagonist, is a former lover of the recently deceased wife of Trusotsky, the title character.

Some critics have ranked this novella among Dostoeyevsky's best works because of its style and structure. Alfred Bem has called it "one of the most complete works by Dostoyevsky in regards to its composition and development.