Leiva Petersen (28 November 1912 - 17 April 1992) was a German classical philologist and publisher.
Leiva Konstanze Petersen was born in Berlin. Her father, Carl Petersen (1885–1942) was originally from in Northwest Schleswig. Carl Petersen was a history professor at Kiel till 1939 when he switched to Greifswald. Leiva Petersen's mother, born Ida Minna Räuber, was a teacher. A cousin was Günther Ramin, the organist and director of music at St. Thomas Church, Leipzig.
She attended school at Marburg and Kiel, and then studied Classical Philology, History and Archeology successively at Frankfurt, Munich, Kiel and Würzburg. It was at Munich that she first met (1914-1996), a fellow student of philology who became a lifelong friend. In 1937 she received her doctorate, supervised by Karl Reinhardt from Frankfurt for a piece of work on the "... history of personification (προσωποποιία) in Geek poetry and visual art" ("Zur Geschichte der Personifikation in griechischer Dichtung und bildender Kunst"). After this she undertook an extended study trip to Italy, also taking time to work for a time as a home tutor in Denmark. Back in Germany, in 1939 she passed the exams necessary to take up a teaching career in higher education.
Now, however, she embarked on a book trade apprenticeship with Hermann Böhlaus Nachfolger, a venerable publishing institution that could trace its convoluted and at times illustrious history back to the "Weimarer Hofbuchdruckerei" ("Weimar Court printers") founded in 1624. Just three years later, in 1942, she found herself in charge of the business, known as its "Kommanditistin". She retained the responsibilities which the appointment involved till her career ended in 1983. War, which had broken out in 1939, ended in May 1945, with a large part of what had been central Germany - including Weimar - administered as the Soviet occupation zone. In 1946 Petersen obtained one of the first private company licences from the Soviet military administrators, in 1947 becoming personally responsible (and liable) for the business. Under her leadership the business produced academic editions of German classics and Reformation literature, including the works of Goethe, Schiller and Luther, along with the humanities more generally.