Who wrote the silmarillion novel?

The Silmarillion was written by J.R.R. Tolkien, but it was published posthumously by his son, Christopher Tolkien, in 1977.

While Tolkien himself worked on the Silmarillion for decades, it was never fully finished before his death. Christopher Tolkien meticulously compiled and edited his father's notes, drafts, and essays to create the published version of The Silmarillion.