181, is a melodrama for narrator and piano, written in 1897 by Richard Strauss setting a German translation of the 1864 poem of the same name by Alfred, Lord Tennyson.

[1] Strauss uses leitmotifs to identify each of the characters: Enoch Arden (a chordal sequence in E flat), Annie Lee (a rising figure in G), Philip Ray (a melody in E),[6] the sea (G minor).

Enoch Arden was popular in its day, but slipped into obscurity when fashions changed and recitations, declamations and melodramas came to be considered passé.

In recent years the work has attracted some notable names in both the speaker's role, including Dietrich Fischer-Dieskau, Jon Vickers, Michael York, Claude Rains, Benjamin Luxon, Patrick Stewart and Gwyneth Jones, and the pianist's role, including Glenn Gould, Jörg Demus, Stephen Hough, Emanuel Ax, and Marc-André Hamelin.

The English opera singer Richard Temple performed the work various times in the early 20th century, including at Steinway Hall in New York.