Brian Sibley is a British writer. He co-wrote BBC Radio 4's adaptation of Tolkien's The Lord of the Rings with Michael Bakewell, and has also adapted C. S. Lewis's Chronicles of Narnia and Mervyn Peake's Titus Groan and Gormenghast for Radio 4.

More recently he has written the text accompanying some of the illustrated book spin-offs from Peter Jackson's film versions of Tolkien.

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