Karl Ludwig Pfau (pronounced as /de/; August 25, 1821 - April 12, 1894) was a German poet, journalist, and revolutionary. He was born in Heilbronn and died, aged 72, in Stuttgart.
Some of Ludwig Pfau's poetry has been used in the composition of Kunstlieder (or more popularly in English, Lieder). Many German texts, including texts set to music by Schoenberg, have been collected and housed on-line at The LiederNet Archive. Many are available in English translation in this collection.
A different Ludwig Pfau (1573–1630) of Winterthur, Switzerland was a maker of cocklestoves. Reference: Allingham, Margot (1999). Dutch Tiles: Introduction. Retrieved 2005-02-25.