Robert Schumann, sometimes given as Robert Alexander Schumann, (June 8, 1810 – July 29, 1856) was a German composer, aesthete and influential music critic. He is one of the most famous Romantic composers of the 19th century.

He had hoped to pursue a career as a virtuoso pianist, having been assured by his teacher Friedrich Wieck that he could become the finest pianist in Europe after only a few years of study with him. However, a hand injury prevented those hopes from being realized, and he decided to focus his musical energies on composition. Schumann's published compositions were, until 1840, all for the piano; he later composed works for piano and orchestra, many lieder (songs for voice and piano), four symphonies, an opera, and other orchestral, choral and chamber works. His writings about music appeared mostly in the Neue Zeitschrift für Musik ("The New Journal for Music"), a Leipzig-based publication that he jointly founded.

In 1840, after a long and acrimonious legal battle with his piano instructor Friedrich Wieck, Schumann married Wieck's daughter, pianist Clara Wieck, a considerable figure of the Romantic period in her own right. Clara Wieck showcased many works by her husband as well. For the last two years of his life, after an attempted suicide, Schumann was confined to a mental institution.