C. G. Boerner is a German firm engaged in printing, also in the auction and trade of antiquarian books and manuscripts. It was established in Leipzig in 1826, and moved to Düsseldorf in 1950, at the end of World War II. Today the business is still open to the public at its Düsseldorf headquarters -Grabenstrasse, 5- and also in New York -526 Wet 26th Street, Rm 419-.