Grant Allen (1848–1899) was a Canadian-born novelist, essayist, and science writer, best known for his popular fiction works in the late 19th century. Allen was a versatile writer who explored a wide range of genres, including mystery, science fiction. He often incorporated scientific themes and theories into his works, reflecting the intellectual climate of his time.

Allen's writing career began in the 1870s with his contributions to various periodicals, including the Cornhill Magazine and the Pall Mall Gazette. He gained widespread recognition for his "scientific romances," which combined elements of adventure with speculative science. One of his most famous works in this genre is "The British Barbarians" (1895), a satirical novel that critiques contemporary British society.

However, Allen is perhaps best remembered for his "The Woman Who Did" (1895), a controversial novel that explores themes of feminism, marriage, and individual freedom. The book sparked significant debate upon its publication and remains a notable work in the history of feminist literature.

Throughout his career, Allen maintained a prolific output, publishing dozens of novels, short stories, and essays. His writing often reflected his progressive views on social issues such as women's rights, imperialism, and religion. Despite his untimely death at the age of 51, Grant Allen's works continue to be studied and appreciated for their imaginative storytelling and thought-provoking themes.