The Sorrows of Young Werther (German: Die Leiden des jungen Werthers) is an epistolary and loosely autobiographical novel by Johann Wolfgang von Goethe, first published in 1774; a revised edition of the novel was published in 1787. Werther was an important novel of the Sturm und Drang period in German literature, and influenced the later Romantic literary movement.

Finished in six weeks of intensive writing during January–March 1774, its publication instantly made the 24-year-old Goethe one of the first international literary celebrities. Of all his works, this book was the most known to the general public. Towards the end of Goethe's life, a personal visit to Weimar became crucial to any young man's tour of Europe.