Charles Klein (January 7, 1867 – May 7, 1915) was an English-born playwright and actor who emigrated to America in 1883.

[1] Once in Norwich, Hermann became a professor of foreign languages at the King Edward VI Grammar School, and Adelaide taught dance.

Klein moved to New York City in 1883 and began his theatrical career by appearing in Little Lord Fauntleroy and other juvenile roles such as The Messenger from Jarvis Section and The Romany Rye.

B. Doblin; these included The District Attorney and the libretto to John Philip Sousa's best remembered and most revived operetta, El Capitan, premiered in 1896.

[8] He came into prominence as a dramatist in 1897 with the Charles Frohman production of Heartsease, of which he was co-author with Joseph I. C. Clarke, which played long seasons and annual revivals for seven years, starring Henry Miller.

[11] Klein's melodramas were among the most successful of the first decade of the twentieth century, primarily because of their focus on themes of contemporary life in the United States.