Alfred Grünwald (1884–1951) was an Austrian author, librettist, and lyricist, renowned for his contributions to operetta and musical theater. Born on February 16, 1884, in Vienna, Austria, Grünwald began his career working in various roles such as a supernumerary, chorister, and at a theatrical agency before transitioning to writing. He became a theater critic for the Neue Wiener Journal and started writing Kabarett sketches and librettos for operettas from 1909, often collaborating with Julius Brammer.

Grünwald's notable collaborations included working with composers such as Franz Lehár, Emmerich Kálmán, Oscar Straus, Paul Abraham, and Robert Stolz. His works were prominent on Broadway, with productions like "Countess Maritza" (1926), "The Yankee Princess" (1922), "The Circus Princess" (1927), and "The Duchess of Chicago" (1929). He also co-wrote the comedy "Dancing Partner" with Alexander Engel, produced on Broadway by David Belasco.

As a Jewish artist, Grünwald faced persecution after the Anschluss of Austria in 1938. He was arrested but later released, prompting his family to flee to Paris and eventually to New York City in 1940 via Casablanca and Lisbon. During World War II, he worked with the Office of War Information, translating American songs for radio broadcast to Germany.

Grünwald was a member of the American Society of Composers, Authors and Publishers and continued to produce works in the United States. He passed away on February 24, 1951, in Forest Hills, Queens, New York City. His legacy includes a vast array of operetta librettos, non-musical plays, short stories, and newspaper articles. His son, Henry A. Grunwald, became a notable journalist and diplomat.