There are a few interesting parallels between Greek mythology and Tolkien's universe.

When we think of John Ronald Reuel Tolkien’s Middle-earth, we usually think of it as a Medieval-inspired world. But if you look just a little closer, there is a surprising amount of ancient Greek mythology in JRR Tolkien's universe. If you like these takes on the reception of Greek Mythology, you may also like my recent articles connecting films such as Backrooms (2026) and Obsession (2026) with various Greek myths and legends.

"One ring to rule them all, one ring to find them,
One ring to bring them all and in the darkness bind them."
We are all familiar with the one ring, the Ring that Gollum called its "precious". In Hobbit Tolkien tells the tale of Bilbo Baggins who finds the ring in a cave, guarded by Gollum, a strange human-like creature. Bilbo essentially steals the ring which has the power to make him invisible.
In Lord of the Rings we learn that the ring was created by the Dark Lord Sauron to contain his will and power. The ring is able to corrupt its wearer and will always seek to return to its master.
The story seems to be drawing inspiration from Book 2 of the Republic where Plato tells the story of Gyges, the shepherd who became the King of Lydia.
Gyges was outside, tending to his flock when an earthquake revealed a hidden, underground royal tomb where Gyges discovered a ring. The Ring was not ordinary as it granted him the ability to become invisible.
Gyges used the ring to seduce the queen of Lydia, murder the king, and take the throne for himself. The story is used by Plato as a thought experiment to wonder whether a human could remain moral if he was magically able to escape from public sight:
"Suppose now that there were two such magic rings, and the just put on one of them and the unjust the other; no man can be imagined to be of such an iron nature that he would stand fast in justice. No man would keep his hands off what was not his own when he could safely take what he liked out of the market, or go into houses and lie with any one at his pleasure, or kill or release from prison whom he would, and in all respects be like a god among men." (Plato, Republic 360b)
Tolkien's ring presents multiple similarities to the story of Gyges. First, in both cases we have to do with a ring that belonged to someone powerful (Sauron - unknown king). Then, the ring is hidden somewhere underground. The ring can make its bearer invisible. The ring corrupts, in Tolkien's case literally, in Plato's case it allows your darkest, most immoral instincts to surface.

In his poem Works and Days (lines 109–201), Hesiod lists five successive ages of civilization:

Tolkien is not mirroring these ages exactly but he presents four ages that become less and less "glorious" with each successive age. A key idea is that the elves (the most noble race of all) abandons the Middle Earth completely by the fourth age.

Cronus was the king of the Titans (deities that came before the Olympians). His son, Zeus, overthrew him in a violent war called the Titanomachy. Zeus became the king of the gods and Cronus was sent as a prisoner to the Tartarus, the deepest and darkest pit of the underworld.
Morgoth suffers a similar fate in Silmarillion. Morgoth corrupts a spirit (Maia) named Mairon to become his servant under the name Sauron. However, Morgoth is eventually defeated by the other gods, the Valar, and banished in a void of nothingness with his hands and legs compromised. Sauron takes his master's place and rules in his stead as the new dark lord.

Kind of an obvious one, but in Greek myth trees were inhabited by female spirits, the nymphs. Depending on the tree types they occupied the nymphs had different names.
In the Lord of the Rings universe, trees are seen as sacred and we even come across the Ents, giant tree beings who live and protect the forests. However, the connection is a very loose one and Tolkien was mainly inspired by Northern folklore where trees were also sacred. The term ent even derives from Old English and translates to giant.
Also Tolkien has stated that he thought of the Ents as trees going to war after being frustrated with William Shakespeare's play Macbeth where a prophecy suggests that:
"Macbeth shall never vanquished be until Great Birnam Wood to high Dunsinane Hill shall come against him."
In Shakespeare the prophecy is a metaphor for an army concealed with branches cut from the Great Birnam Wood. Tolkien didn't like this and wanted a story where a Forest actually went to war.
The Isles of the Blessed (aka Isles of Makaron) were sort of the Greek version of Paradise, a winterless, green island where the souls of heroes and those who lived a good life would end up.
In Tolkien's world, there was a land of undying beauty off the Western coast of the Middle Earth. This is Valinor, a place where the immortal elves live a blessed life near the gods. In the end of Lord of the Rings, that's where Frodo goes with the last of the elves.

A great island civilization that was ages in front of the rest of the world. Their technology was advanced, their army powerful.
But then, suddenly a great flood came and the island was swallowed by the ocean. Now the civilization has completely vanished and only stories of its existence are left.
There is no doubt that Tolkien's Numenor is based on Plato's Atlantis as he describes it in Timaeus and Critias.
There are quite a few similarities in the way Tolkien describes his pantheon to Greek myth. Here is a table summary of notable connections:
| Greek God | Valar | Realm |
| Zeus | Manwe | Air/Sky, King of Gods |
| Poseidon | Ulmo | Water/Ocean |
| Hephaestus | Aule | Smithing |
| Artemis | Orome | Hunt/Forests |
| Hades | Mandos | Govern realms where the souls of dead end up |
According to Tolkien, his lesser known work Beren and Luthien was sort of a re-reading of the myth of Orpheus and Eurydice with the genders swapped. In both cases love is the central theme and one of the protagonists must descend to the realm of the dead to bring their love back.
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