A Shoggoth on the Roof is a parody of the 1964 musical Fiddler on the Roof based on the works of H. P. Lovecraft. Published by the H. P. Lovecraft Historical Society, it is credited to a member of the society who is referred to only as "He Who (for legal reasons) Must Not Be Named". The musical makes use of Fiddler on the Roof's original score. As a result, attempts to stage A Shoggoth on the Roof are open to legal challenges and hence rare.