Arthur Gask (1869–1951) was an Australian dentist and novelist. He began writing crime fiction while waiting for his patients, and in 1921 he paid for the publication of his first novel, The Secret of the Sandhills, which was an immediate success. Over the next thirty years, Gask wrote more than thirty books and contributed a series of popular short stories to The Mail in Adelaide. Most of his novels described the activities of a detective, Gilbert Larose, in solving crimes.