
Walter de Gruyter (1862–1923) was aGerman publisher and bookseller.

Born inRuhrort in 1862, Walter de Gruyter took a position withReimer Verlag in 1894 inBerlin. By 1897, at the age of 35, he had become sole proprietor of the hundred-year-old company then known for publishing the works of German romantics such asJohann Gottlieb Fichte,Friedrich Schleiermacher, andHeinrich von Kleist. De Gruyter later acquired four other publishing houses –Göschen,Guttentag,Trübner, andVeit – and, in 1919, merged them into one:Vereinigung wissenschaftlicher Verleger Walter de Gruyter & Co., located inGenthiner Straße in Berlin.[1] The four publishers specialized in philosophy, theology, German literature, medicine, mathematics, engineering, law, political science, and natural science. By the time of his death in 1923, Walter de Gruyter had created one of the largest modernpublishing houses in Europe.[2]
De Gruyter was married to Eugenie Müller. Both of his sons, Hans and Georg, died in World War I. De Gruyter's son-in-law,Herbert Cram, who married Clara de Gruyter, succeeded him in the management of the company and it continues to be family-owned. His daughter Elle de Gruyter married German lawyerKarl-August Crisolli and later German publisherBurkhard Meier.[citation needed]