Jacob Worm-Müller (15 May 1866 – 6 May 1911) was a Norwegian author and journalist. He was born in Bergen as a son of ship-owner Bernt Ulrich August Müller and Amalie, née Alver. His mother later remarried as Amalie Skram and became one of Norway's best-known authors. After Jacob Worm-Müller finished his secondary education in 1884, he studied law, but mixed with the Kristiania Bohemians and was subsequently then sent by his mother to Copenhagen. He returned to Norway in 1894. He married Emmy Helene Hornemann, who became an actress.