D Giles Limited is a specialist visual publisher, with its headquarters in the United Kingdom. The company supplies integrated book publishing and electronic/digital publishing products and services to museums and galleries.

GILES has an international sales network, with fully developed distribution arrangements both in the USA and UK, Europe and Rest of World. Alongside more traditional arrangements, GILES has developed a robust direct sales operation targeting sales to specialist niche markets, including academic ones.

Publishing under the imprint of GILES, the company focuses on co-publishing for museums, galleries, and a range of specialist institutions, including major research libraries. The core list comprises exhibition catalogues, permanent collection titles, souvenir and visitor guides with an emphasis on modern and contemporary art, fine and decorative art, architecture, photography and history. Clients include Cincinnati Art Museum, Dulwich Picture Gallery, The Frick Collection, Hillwood Estate, Museum & Gardens, The Library of Congress, The Morgan Library & Museum, the National Museum of African American History and Culture, New-York Historical Society, the Olympic Museum, The Phillips Collection, the Smithsonian American Art Museum and Smithsonian National Portrait Gallery.

GILES provides specialist editorial, translation, design, colour origination and pre-press services; printing and press management; international sales, marketing and distribution. Throughout, the emphasis is on the quality and accessibility of the finished product. GILES is actively engaged in developing both web-based and portable electronic/digital content, coming out its print book materials. Clients include the Albright-Knox Art Gallery, Brooklyn Museum, Cleveland Museum of Art, Detroit Institute of Arts, Freer|Sackler Gallery and the Library of Congress.