Alfred Blau (died 23 February 1896) was a French dramatist and opera librettist. He was a cousin of Édouard Blau, another French librettist of the same period.
In late 1887 he was in negotiations with Emmanuel Chabrier for a libretto on the subject of The Tempest by Shakespeare, but the project came to nothing.
Le Chanteur florentin with Édouard Blau, (1866)
Sigurd with Camille du Locle (1884)
Esclarmonde with Louis de Gramont (1889)