What was the name of Tolkien’s wartime writing group with C.S. Lewis?

Tolkien’s wartime writing group with C.S. Lewis was called The Inklings.

The Inklings were an informal Oxford literary discussion group active mainly during the 1930s and 1940s. Tolkien, C.S. Lewis, Charles Williams, and Owen Barfield were among its best-known members. They read drafts aloud, discussed literature, and offered criticism on works in progress.

The group met in rooms at Magdalen College and also at the Eagle and Child pub, commonly nicknamed the Bird and Baby. Tolkien read portions of The Lord of the Rings to the group, while Lewis shared work that would contribute to his fiction and apologetic writing.

The Inklings were not a formal society with a fixed membership list or published manifesto. The name began as a student literary club at Oxford and was later applied to the circle surrounding Lewis and Tolkien. This informal character is why descriptions of its exact membership can vary.