Gunnar Otterbech Larsen (5 February 1900, in Oslo – 5 November 1958) was a Norwegian journalist, writer, and translator. He worked in the newspaper Dagbladet from 1923 to 1958, where he was news editor from 1930 and became editor-in-chief with Helge Seip in 1954. His first novel, I sommer, was published in 1932. It was followed by To mistenkelige personer (1933), a crime novel based on actual events that took place in 1926. To mistenkelige personer was praised by many critics, including Sigurd Hoel. Both I sommer and To mistenkelige personer were inspired by Ernest Hemingway's writings.