Walter Archer Frost (December 18, 1875 – March 10, 1964) was an American writer of plays and stories. He served in the U.S. Army. He authored the story the film The Siren (1917 film) was based on. He also wrote the 1925 play . He also wrote the play the 1929 film Black Magic (1929 film) was based on. In 1909 he was published in Overland Monthly. In 1912 he wrote for Harper's Bazar. Frost was born in Amenia, New York. He was part of the Harvard class of 1901. He received an LLB from the University of Wisconsin in 1904. He married SusanWinifred McCurdy. He died in Martinsburg, West Virginia.