Vier ernste Gesänge, Op. 121, is a cycle of four songs for bass and piano by Johannes Brahms. As in his Ein deutsches Requiem, the texts are compiled from the Luther Bible. Three songs deal with death and the transience of life, while the fourth has an outlook of faith, hope and charity. Brahms composed the work in Vienna in 1896 and dedicated it to Max Klinger. The songs were premiered there in the presence of the composer by baritone Anton Sistermans and pianist Coenraad V. Bos. They have been recorded often by both female and male singers.

Johannes Brahms was a German composer, pianist, and conductor of the mid-Romantic period. Born in Hamburg into a Lutheran family, he spent much of his professional life in Vienna. He is sometimes grouped with Johann Sebastian Bach and Ludwig van Beethoven as one of the "Three Bs" of music, a comment originally made by the nineteenth-century conductor Hans von Bülow.