Which traditions do they belong to?

Njord belongs to the Norse Pantheon, and Poseidon to the Greek Pantheon.

Side by sideParallel across traditions

Njord vs Poseidon

Both are sea gods, though Njord is a Vanir deity associated more with wealth from the sea and calm waters.

At a glance

Njord and Poseidon compared
	Njord	Poseidon
Tradition	Norse Pantheon	Greek Pantheon
Domains	sea, wealth, prosperity, seafaring, trade	sea, earthquakes, horses, storms
Symbols	ship, sea, wind, harbor	trident, horse, dolphin, bull
Also called	Njordr, Njörðr	Neptune

Where they meet

Both are associated with sea.

Where they part

Only Njord

Associated with wealth, prosperity, seafaring, and trade.

Only Poseidon

Associated with earthquakes, horses, and storms.

Why they are compared

Both are major gods of the sea.

How each was worshipped

Njord

Cult sites: No named temple survives in the sources; later tradition places his cult in coastal Norway and Sweden, especially among people who lived by ships and trade.; The Ynglinga saga makes him a king at Noatun after the Aesir-Vanir peace, which is a way of saying his house was a harbor.
Festivals: Seafaring offerings; Harvest and plenty (Vanir cult)

Njord is asked for wind, wealth, and a safe voyage. Snorri says he rules the motion of wind and sea and the gifts of land and livestock. Evidence for a fixed festival calendar is thin; what we have is a sea god of plenty, not a temple inventory.

Poseidon

Cult sites: Sanctuary of Poseidon at Isthmia; Temple of Poseidon at Sounion; Onchestos in Boeotia
Festivals: Isthmian Games; Posideia

Horses, earthquakes, and the drowned coast are his working signs. Isthmia held games under his name. A bull often went to the sea. Inland Boeotia kept him as a horse god, not only a sailor's patron.

The two figures

Norse Pantheon

Njord

Vanir god of the sea, seafaring wealth, trade, and calm waters. Father of Freyja and Freyr.

Njord is one of the Vanir, the divine clan associated with prosperity, fertility, and the wealth that comes from land and sea. After the Aesir-Vanir War, he came to live among the Aesir as part of the hostage exchange that secured peace between the two groups of gods. In later Norse tradition he is remembered as a patron of sailors, merchants, fishermen, and all who rely on favorable winds and safe coasts.

Njord belongs to the Vanir, the gods of wealth, harbor weather, and the kind of luck that arrives with a full hold. After the Aesir-Vanir war he was sent to Asgard as a hostage, together with his children Freyja and Freyr, to keep the peace. The arrangement stuck: he lives among the Aesir at **Noatun**, the enclosure of ships, but his cult still smells of salt and trade rather than of Odin's hall.

Read the full Njord entry

Greek Pantheon

Poseidon

God of the sea, earthquakes, and horses. Brother of Zeus and Hades, ruler of the oceans and all waters.

Poseidon rules the vast oceans, earthquakes ("Earth-Shaker"), and horses. He is a moody and tempestuous god, much like the sea itself. Sailors prayed to him for safe passage, often sacrificing horses or bulls to appease his wrath.

Read the full Poseidon entry

About this comparison

Comparisons pair figures that play a similar role across traditions, or that the myths connect within one. A shared role does not, by itself, establish a shared origin.