|Parent company||Hachette Livre|
|Founder||Anthony Cheetham, Rosemary Cheetham, and Rosemary|
|Country of origin||United Kingdom|
|Imprints||Weidenfeld & Nicolson, Gollancz, Phoenix, Cassell Military, Everyman's Library|
Orion Publishing Group Ltd. is a UK-based book publisher. It was founded in 1991 and acquired Weidenfeld & Nicolson the following year. In 1998, Orion was acquired by French publisher Hachette Livre. Also in 1998, Orion bought Cassell.
The group also distributes books for the independent Halban Publishers.
Books distributed through Littlehampton book services.