Mark John Hellinger was an American journalist, theatre columnist and film producer.

Broadway Bill is a 1934 American comedy-drama film directed by Frank Capra and starring Warner Baxter and Myrna Loy. Screenplay by Robert Riskin and based on the short story "Strictly Confidential" by Mark Hellinger, the film is about a man's love for his thoroughbred race horse and the woman who helps him achieve his dreams. Capra disliked the final product, and in an effort to make it more to his liking, he remade the film in 1950 as Riding High. In later years, the distributor of Riding High, Paramount Pictures, acquired the rights to Broadway Bill. The film was released in the United Kingdom as Strictly Confidential.