Mouton de Gruyter

Walter de Gruyter GmbH

Type	Limited liability company (Gesellschaft mit beschränkter Haftung)
Founded	1749; 268 years ago (1749)
Headquarters	Germany, Berlin
Key people	Dr. Anke Beck, Carsten Buhr
Revenue	€57,6 million (2014)
Number of employees	350-500
Website	www.degruyter.com

Walter de Gruyter GmbH (German: [ˈɡʁɔʏ̯tɐ] or [ˈxʁɔʏ̯tɐ]; brand name: De Gruyter) is a scholarly publishing house specializing in academic literature. The company has its roots in the bookstore of the Königliche Realschule in Berlin, which had been granted the royal privilege to print books by King Frederick II of Prussia in 1749. In 1801 the store was taken over by Georg Reimer. In 1919, Walter de Gruyter (1862–1923) merged it with 4 other publishing houses into the company that became Verlag Walter de Gruyter & Co in 1923, and Walter de Gruyter GmbH in 2012.

Several former publishing houses have become imprints of De Gruyter.

De Gruyter is one of thirteen publishers to participate in the Knowledge Unlatched pilot, a global library consortium approach to funding open access books.