Did the Norse Actually have 9 realms?
If you have spent any amount of time studying Norse mythology, you have probably encountered the Nine Realms. The familiar list normally includes Ásgarðr, Miðgarðr, Vanaheimr, Jötunheimr, Álfheimr, Svartálfaheimr, Niflheimr, Muspelheimr and Helheimr. They are frequently shown arranged neatly around Yggdrasill, with different worlds sitting among its branches, around its trunk and beneath its roots. It has become such a standard part of modern Norse mythology that it is very easy to assume this entire system comes directly from the medieval sources. The problem is that no surviving Old Norse source actually gives us that list of nine realms.
That does not mean the Nine Worlds themselves are a modern invention. The expression níu heimar, literally “nine worlds” or “nine homes,” genuinely occurs in Old Norse literature. What becomes uncertain is exactly what those nine heimar were. The medieval texts never stop and provide us with a convenient numbered list identifying them, nor do they provide the familiar modern diagram showing nine separate worlds arranged around Yggdrasill. In other words, the Nine Worlds are historical; our standardised list of the Nine Realms is a reconstruction.
One of the clearest references appears extremely early in Völuspá. In stanza 2, the völva speaks of remembering níu heimar, the Nine Worlds, as she recalls an ancient cosmic past. This is enormously important because it demonstrates that the concept itself is not something invented by modern Heathens, fantasy writers or Marvel. The poetic tradition genuinely knows of Nine Worlds. However, Völuspá does not then tell us their names. There is no following passage explaining that the nine consist of Ásgarðr, Miðgarðr, Vanaheimr, Jötunheimr and so forth. Apparently the poet either did not need to explain them to the intended audience or the phrase was functioning in a way that did not require a rigid geographical list.
Another reference occurs in Vafþrúðnismál. During Óðinn's contest of knowledge with Vafþrúðnir, the jötunn boasts of his enormous experience and says that he has travelled through nine worlds. The passage then connects his knowledge with Niflhel and the world of the dead. This is particularly interesting because it does not sit especially comfortably with the modern image of nine independent realms distributed neatly across the branches and roots of Yggdrasill. Once again, the text clearly knows the concept of nine worlds, but it does not identify them for us.
Snorri Sturluson gives us another reference in Gylfaginning. When describing Loki's daughter Hel, Snorri says that Óðinn cast her into Niflheimr and gave her authority yfir níu heimum - “over nine worlds.” In this particular context, those nine worlds appear connected with Hel's authority over the dead. That creates yet another complication for the idea that níu heimar always means one fixed collection of nine cosmic territories. If Hel rules over nine worlds, are these supposed to be the exact same Nine Realms found on modern diagrams? Is Hel ruling Ásgarðr as well as Miðgarðr and Jötunheimr? Probably not. The phrase is clearly more complicated than the standard modern model suggests.
The word heimr itself is worth understanding. It is commonly translated as “world” or “realm,” but its semantic range is broader than the English word “realm” can suggest. It can refer to a home, dwelling-place, region, land or world depending upon context. It is related to English “home.” So when an Old Norse poet refers to níu heimar, we should be careful not to immediately imagine nine completely separate dimensions floating around a cosmic tree like planets in a solar system. That interpretation is possible as a modern model, but the word itself does not require it.
The medieval sources certainly describe numerous distinct mythological places. Ásgarðr is associated with the gods, Miðgarðr with humanity, and Jötunheimr with the jötnar. Grímnismál tells us that Álfheimr was given to Freyr as a tooth-gift, while Vanaheimr appears elsewhere as a homeland associated with the Vanir. We also encounter Niflheimr, Hel, Niflhel, Muspell, Niðavellir and other locations. These are genuine names and concepts from the surviving literature. The problem begins when we take nine of them and declare that we have recovered an ancient official list.
A particularly good example of the problem is Niðavellir and Svartálfaheimr. Niðavellir occurs in Völuspá, while Snorri uses Svartálfaheimr in the Prose Edda. Modern Nine Realms lists frequently combine them into something like “Niðavellir/Svartálfaheimr — the realm of the dwarfs.” Doing that conveniently keeps our number of worlds at nine, but the medieval sources never explicitly tell us that Niðavellir and Svartálfaheimr are simply two interchangeable names for one of the canonical Nine Worlds. That identification is an attempt to harmonise different pieces of evidence.
Hel and Niflheimr cause similar difficulties. Modern diagrams commonly treat them as two completely separate realms because both are useful for filling the nine available positions. Yet Snorri describes Hel herself as being cast into Niflheimr, while the surviving literature also uses Hel and Niflhel in ways that make the geography considerably messier than a modern fantasy map suggests. This does not mean that Hel and Niflheimr are definitely identical either. The important point is that the sources do not give us the neat distinction that modern charts often imply.
Muspell creates another difficulty. Snorri describes the fiery region associated with Muspell and the beings who emerge from it, and modern lists normally turn this into Muspelheimr, one of the standard Nine Realms. Again, the underlying mythological concept is genuine. What is less secure is the assumption that it occupied one clearly defined slot within a universally recognised nine-part cosmological system.
Then we have Yggdrasill itself. Nearly everyone has seen the familiar illustration: Ásgarðr somewhere near the top, Miðgarðr conveniently in the centre, Hel below, and the remaining realms distributed symmetrically around the tree. It is an extremely useful teaching diagram. It is also not an ancient Norse map. No surviving medieval manuscript provides us with a labelled diagram of Yggdrasill showing where each of the Nine Realms sits.
The sources certainly connect Yggdrasill with different regions of the cosmos. Grímnismál describes three roots extending in different directions and associates them with different beings or regions. Snorri also describes three roots and the wells beneath them. But even these descriptions create difficulties when we try to force everything into one perfectly consistent geographical model. The poetic and prose sources do not always describe the cosmic landscape in precisely the same way, and they were never required to behave like pieces of a modern atlas.
That tells us something much broader about Norse mythology. We often approach it expecting there to be one correct cosmological system hidden behind the stories. We assume that if we collect enough poems and saga passages, eventually every location will fit neatly into its proper place. But the material we call “Norse mythology” survives through different poems, manuscripts, authors, regions and periods. Much of it ultimately derives from oral traditions in which multiple versions of an idea could coexist. There is no reason to assume every storyteller throughout the Norse world possessed exactly the same cosmic map.
Even the importance of the number nine needs to be considered. Nine appears repeatedly throughout Norse mythological literature. Óðinn hangs upon the tree for nine nights. Heimdallr has nine mothers. Ægir and Rán have nine daughters. Hermóðr rides for nine nights on his journey towards Hel. Njörðr and Skaði arrange their residence in periods of nine nights. Nine is clearly a significant recurring number within the mythology. Therefore níu heimar might carry symbolic significance as well as geographical meaning. Recognising that possibility is very different from claiming that the phrase is merely symbolic, however. The sources genuinely speak about Nine Worlds; we simply cannot confidently identify every member of the group.
Another interesting perspective comes from Alvíssmál. Throughout the poem, Alvíss explains that humans, gods, Vanir, jötnar, elves and dwarfs use different names for the same things. The poem presents a cosmos populated by numerous communities of beings with their own perspectives and terminology. What it does not provide is a neat taxonomy explaining that these groups each occupy particular numbered worlds. Norse cosmology appears much more relational and fluid than the modern Nine Realms chart can make it seem.
So where did our familiar list come from? It developed through later interpretation and reconstruction. Scholars, translators and mythographers encountered genuine references to Nine Worlds alongside numerous named mythological locations and naturally attempted to determine which locations constituted the nine. Different reconstructions have consequently existed. Modern mythology books, websites, artwork, films, games and popular culture then helped standardise a particular version until it began to look like something directly preserved in the Eddas.
This is why saying that “the Nine Realms are completely modern” would actually be just as misleading as presenting the familiar list as unquestionable Viking-Age doctrine. The concept of Nine Worlds is genuinely attested. Most of the places appearing on modern lists are genuinely attested. Yggdrasill is genuinely central to Norse cosmological material. What is not attested is our tidy canonical list identifying exactly which nine places constituted the Nine Worlds and precisely where each one sat on Yggdrasill.
That distinction is exactly what historical reconstruction is about. We do not need to throw away modern Nine Realms diagrams or stop using them as teaching aids. They are an incredibly convenient way of introducing people to Norse cosmology. We simply need to label them accurately. They are modern models constructed from medieval evidence, rather than surviving Viking-Age cosmological maps.
And perhaps that is actually more interesting than the neat version. The surviving Norse cosmos is strange, inconsistent and difficult to map. Places overlap conceptually, boundaries are crossed, beings travel between different regions, terminology changes between sources and different authors do not always give us exactly the same picture. Instead of forcing that material into a perfectly ordered fantasy universe, we can allow the historical evidence to remain complicated.
So, did the Norse believe in the Nine Worlds?
The evidence tells us that níu heimar (Nine Worlds) was absolutely an Old Norse concept.
Do we know exactly which nine they were?
No.
And that little difference between those two answers is exactly why historical context matters.