Reason for anonymity: religious

Sacred and liturgical texts from traditions that did not record individual authorship at all.

10 works.

Still unknown
Book of the Dead
Date unrecorded · other
The ancient Egyptian collection of funerary spells guiding the dead through the afterlife. Tradition associates such texts with the god Thoth; no historical author exists in the record.
Still unknown
Book of the Earth
Date unrecorded · other
An ancient Egyptian funerary composition showing the sun's night journey through the earth god Aker. Anonymous, like all Egyptian netherworld books.
Still unknown
Coffin Texts
Date unrecorded · other
The Middle Kingdom corpus of Egyptian funerary spells painted on coffins, ancestor of the Book of the Dead. Composed anonymously within priestly tradition.
Still unknown
Hurrian hymn to Nikkal
Date unrecorded · poem
The oldest surviving notated music in the world, a hymn to the goddess Nikkal from Ugarit, around 1400 BCE. Composer unknown.
Still unknown
Key of Solomon
Date unrecorded · other
The most famous of the grimoires, attributed by its own tradition to King Solomon. Its actual medieval and Renaissance compilers are unknown.
Still unknown
Litany of Re
Date unrecorded · other
A New Kingdom Egyptian funerary text invoking the sun god in seventy five forms. Produced by priestly tradition; the record names no author, only 'the clergy'.
Still unknown
Pyramid Texts
Date unrecorded · other
The oldest religious texts of ancient Egypt, carved in pyramids from the twenty fourth century BCE. Institutional priestly compositions with no recorded author.
Still unknown
Spell of the Twelve Caves
Date unrecorded · other
An ancient Egyptian funerary composition enumerating twelve caves of the underworld and their gods. Anonymous priestly tradition.
Later revealed
Supernatural Religion: An Inquiry into the Reality of Divine Revelation
Date unrecorded · treatise
The anonymous 1874 critique of the New Testament's miracle evidence that convulsed Victorian theology. Walter Richard Cassels was identified in his lifetime.
Still unknown
The Book of Gates
Date unrecorded · other
The New Kingdom Egyptian netherworld book of the twelve gates of the night. An institutional priestly composition with no recorded author.

Other reasons:Political risk · Gender · Propriety · Satire · Marketing · Unrecorded