Few celebrity families have generated as much curiosity around baby names as Elon Musks.
Search for Elon Musk kids names, and you quickly encounter everything from familiar choices such as Griffin and Damian to names that look as though they belong in a science-fiction novel, including X Æ A-Xii and Exa Dark Sideræl.
As of October 2026, Elon Musk has 14 publicly known children with four women: Justine Wilson, Grimes, Shivon Zilis, and Ashley St. Clair.
Their names are:
- Nevada Alexander
- Griffin
- Vivian Jenna Wilson
- Kai
- Saxon
- Damian
- X Æ A-Xii
- Exa Dark Sideræl
- Strider
- Azure
- Techno Mechanicus
- Arcadia
- Romulus
- Seldon Lycurgus
The striking thing is not simply how unusual some of these names are. Musks children represent several completely different naming styles, ranging from traditional English names to mythology, technology, literature, astronomy, and highly experimental combinations.
Here is the story behind the names of Elon Musks children.
How Many Kids Does Elon Musk Have?
Elon Musk has 14 publicly known children.
According to PEOPLEs overview of Elon Musks children, Musk has children with four women:
- Justine Wilson
- Grimes
- Shivon Zilis
- Ashley St. Clair
His first child was born in 2002, while his youngest publicly known children arrived more than two decades later.
One important detail is that the number refers to publicly known children. Media reporting around Musks family has changed several times as previously private births became public.
Elon Musk Kids Names at a Glance
| Child | Mother | Birth Year |
|---|---|---|
| Nevada Alexander | Justine Wilson | 2002 |
| Griffin | Justine Wilson | 2004 |
| Vivian Jenna Wilson | Justine Wilson | 2004 |
| Kai | Justine Wilson | 2006 |
| Saxon | Justine Wilson | 2006 |
| Damian | Justine Wilson | 2006 |
| X Æ A-Xii | Grimes | 2020 |
| Strider | Shivon Zilis | 2021 |
| Azure | Shivon Zilis | 2021 |
| Exa Dark Sideræl | Grimes | 2021 |
| Techno Mechanicus | Grimes | 2022 |
| Arcadia | Shivon Zilis | 2024 |
| Romulus | Ashley St. Clair | 2024 |
| Seldon Lycurgus | Shivon Zilis | 2025 |
The names become even more interesting when separated by family because each group has a noticeably different naming style.
1. Nevada Alexander Musk
Nevada Alexander was Elon Musk and Justine Wilsons first child.
He was born in 2002 but tragically died from sudden infant death syndrome at 10 weeks old.
Nevada is best known as an American place name, particularly because of the state of Nevada. The word ultimately comes from Spanish and is generally associated with the idea of being snow-covered.
Alexander, meanwhile, is one of the most established classical male names in the world and is traditionally interpreted as meaning defender of men or defender of mankind.
Compared with several names Musk would use later, Nevada Alexander feels relatively conventional.
2. Griffin
Musk and Wilson later welcomed twins in 2004.
One of them was named Griffin.
Griffin has several possible origins, but the name is strongly associated today with the mythological griffin, a creature traditionally represented with the body of a lion and the head and wings of an eagle.
That association gives the name a powerful and adventurous character.
Although unusual enough to stand out, Griffin has become well established as a modern given name.
3. Vivian Jenna Wilson
Griffins twin is Vivian Jenna Wilson.
Vivian later legally adopted her mothers surname, Wilson.
Vivian is an old name with Latin roots related to vivus, meaning alive or living.
Jenna has several proposed origins, including its use as a variation or diminutive of names such as Jennifer.
Among Elon Musks childrens names, Vivian Jenna is one of the most traditional combinations.
4. Kai Musk
In 2006, Elon Musk and Justine Wilson welcomed triplets.
The first is Kai.
Kai is interesting because the name appears independently across several cultures and languages.
Depending on its linguistic origin, Kai has been connected with meanings including sea, keeper of the keys, and other interpretations.
Its brevity also gives it the minimalist quality increasingly popular among modern parents.
NamesReview has explored a similarly restrained celebrity naming style in our guide to Jennifer Lawrences baby names, where short names such as Cy offer a sharp contrast to Musks later experimental choices.
5. Saxon Musk
The second triplet is Saxon.
Saxon originated as an ethnic and historical term referring to the Saxons, a Germanic people who played an important role in European and English history.
As a modern given name, Saxon fits into the growing category of historical surnames and cultural terms being adopted as first names.
It has a strong sound and remains significantly less common than traditional choices such as Jack or James.
6. Damian Musk
The third triplet is Damian.
Damian comes from the Greek name Damianos and is often associated with the Greek word damazo, meaning to tame or subdue.
Unlike X Æ A-Xii or Techno Mechanicus, Damian is firmly established as a traditional given name.
The contrast between Damian and Musks later childrens names demonstrates just how dramatically his naming style changed over time.
Elon Musk and Grimes Kids Names
Musk later had three children with musician Grimes, whose real name is Claire Boucher.
This is where the familys baby-name story becomes dramatically more unconventional.
Their children are:
- X Æ A-Xii
- Exa Dark Sideræl
- Techno Mechanicus
These names combine technology, mathematics, astronomy, artificial intelligence, and personal symbolism.
If unusual celebrity baby names interest you, Musks naming style sits comfortably alongside other unconventional celebrity families. We recently explored the stories behind Trisha Paytas kids names, including Malibu Barbie, Elvis, and Aquaman Moses.
7. X Æ A-Xii Musk
The best-known of all Elon Musk kids names is undoubtedly X Æ A-Xii.
Musk and Grimes welcomed their son in May 2020.
The couple originally announced his name as X Æ A-12, but it was later presented as X Æ A-Xii.
The name immediately generated worldwide discussion because almost every component appears to carry some kind of symbolism.
What Does X Æ A-Xii Mean?
Grimes publicly explained parts of the name after his birth.
X represented an unknown variable.
Æ was described by Grimes as her interpretation of AI, connecting the name with both artificial intelligence and the idea of love in another language.
A-12 referenced an aircraft admired by the parents.
Musks explanation of how the name should be pronounced has also differed slightly from Grimes explanation.
Whatever pronunciation is preferred, X Æ A-Xii became one of the most recognizable celebrity baby names of the modern era.
Today he is frequently referred to simply as X.
How Do You Pronounce X Æ A-Xii?
There is no completely straightforward answer because Musk and Grimes have offered somewhat different explanations.
Musk has described the Æ portion as sounding similar to Ash, while Grimes has explained the letters differently.
That means pronunciations can vary depending on which parents explanation is followed.
In everyday public references, their son is usually called X, removing most of the pronunciation problem entirely.
8. Exa Dark Sideræl Musk
Musks second child with Grimes is Exa Dark Sideræl.
She was born in December 2021 via surrogate.
She is also commonly known by the nickname Y.
Like her brothers name, almost every part of Exa Dark Sideræl was deliberately selected for a particular association.
What Does Exa Dark Sideræl Mean?
Exa reportedly references the computing term exaFLOPS, a measurement connected with extremely high computing performance.
Dark has a more philosophical meaning. Grimes associated it with the unknown and unseen.
Sideræl is connected with the concept of sidereal time, which is based on the movement of the stars rather than the Sun.
The unusual spelling gives the name an even more futuristic quality.
Put together, Exa Dark Sideræl sounds less like a conventional baby name and more like a combination of computing, astronomy, and science fiction.
9. Techno Mechanicus Musk
The third Musk-Grimes child is Techno Mechanicus.
His existence became publicly known in 2023 through biographical reporting, although he had reportedly been born earlier.
He is commonly nicknamed Tau.
Techno Mechanicus might be the clearest expression of the technology-inspired naming style associated with Musk and Grimes.
Techno immediately suggests technology.
Mechanicus carries mechanical or machine-like associations and also has a distinctly futuristic sound.
The nickname Tau has mathematical and scientific associations of its own. The Greek letter tau, written as τ, appears in mathematics and physics.
Taken together, the names X Æ A-Xii, Exa Dark Sideræl, and Techno Mechanicus form one of the most distinctive sibling name sets in celebrity culture.
Elon Musk and Shivon Zilis Kids Names
Elon Musk also has four children with Neuralink executive Shivon Zilis.
They are:
- Strider
- Azure
- Arcadia
- Seldon Lycurgus
This group has another distinct naming personality.
While still uncommon, the names feel more literary, mythological, and evocative than the highly technical names Musk shares with Grimes.
10. Strider
Musk and Zilis welcomed twins in 2021.
One of them is named Strider.
Strider is an English word meaning someone who walks with long, confident steps.
For many readers, however, the strongest cultural association is likely The Lord of the Rings.
Strider is the name Aragorn uses while living and traveling as a Ranger before his royal identity becomes fully known.
That literary connection gives the name themes of adventure, leadership, and independence.
11. Azure
Striders twin is named Azure.
Azure refers to a bright blue color, particularly the vivid blue associated with a clear sky.
As a baby name, it belongs to the growing category of color names, alongside choices such as Violet, Indigo, Scarlett, and Grey.
It is distinctive without being difficult to understand.
If parents like Azures strong opening letter but want a larger selection of alternatives, our collection of baby names starting with A includes both traditional and unusual possibilities.
12. Arcadia
Musk and Zilis later welcomed a daughter named Arcadia.
Arcadia has a long and fascinating history.
Originally a region of ancient Greece, Arcadia developed a much broader literary meaning over time.
In European art and literature, it came to represent an idyllic pastoral paradise, a peaceful natural world removed from the complexity of civilization.
That makes Arcadia far more than simply a place name.
It carries associations with nature, harmony, mythology, and an idealized world.
Of Musks more unusual baby names, Arcadia may be one of the easiest to imagine gaining broader popularity.
13. Seldon Lycurgus
Musk and Zilis fourth publicly known child together is Seldon Lycurgus, whose birth was announced in 2025.
Both parts of the name carry unusually strong historical or literary associations.
What Does Seldon Mean?
Seldon is an uncommon surname-style given name.
Science-fiction readers may immediately associate it with Hari Seldon, the fictional mathematician central to Isaac Asimovs Foundation series.
Hari Seldon develops psychohistory, a fictional mathematical method intended to predict the future behavior of enormous populations.
Considering Musks well-documented interest in technology and science fiction, the association is particularly interesting, although the parents have not necessarily confirmed that this was the direct inspiration.
What Does Lycurgus Mean?
Lycurgus is an ancient Greek name.
The best-known historical Lycurgus is the legendary lawgiver associated with Sparta.
This gives Seldon Lycurgus an unusual combination of futuristic science-fiction associations and ancient Greek history.
14. Romulus
Another publicly known son of Elon Musk is Romulus, whom he shares with author Ashley St. Clair.
Romulus was born in 2024.
The name was publicly reported after St. Clair revealed that Musk was the childs father.
Romulus comes directly from Roman mythology.
According to Roman tradition, Romulus and Remus were twin brothers associated with the founding of Rome, with Romulus traditionally regarded as the citys founder and first king.
Few baby names carry such an explicitly imperial historical association.
Romulus therefore fits surprisingly well beside names such as Arcadia and Seldon Lycurgus, which also draw much of their character from history, literature, or mythology.
What Is the Pattern Behind Elon Musks Kids Names?
Looking at all Elon Musk kids names together reveals something interesting.
There is not one single naming formula.
Instead, several distinct styles appear.
1. Traditional Names
Some of Musks older children have relatively familiar names:
- Griffin
- Vivian
- Kai
- Damian
These would not look particularly unusual on an ordinary baby-name list.
2. Technology and Science Names
His children with Grimes move heavily into technological and scientific territory:
- X Æ A-Xii
- Exa Dark Sideræl
- Techno Mechanicus
Computing, aircraft, astronomy, mathematics, and futuristic imagery all appear within the names or explanations surrounding them.
3. Mythological and Historical Names
Several later choices have clear historical or mythological associations:
- Arcadia
- Romulus
- Lycurgus
These names connect ancient geography, Roman mythology, and Greek tradition.
4. Literary and Science-Fiction Associations
Names such as Strider and Seldon naturally invite comparisons with major works of fantasy and science fiction.
That is another pattern that distinguishes Musks naming style from more conventional celebrity choices.
Interestingly, unconventional sibling names are becoming increasingly visible among influencers and celebrities. The children of Nara and Lucky Blue Smith offer another example, with choices such as Rumble Honey, Slim Easy, Whimsy Lou, and Fawnie Golden. You can explore their full stories in our guide to Nara Smiths kids names.
Which Elon Musk Child Has the Most Unusual Name?
That is subjective, but X Æ A-Xii remains the obvious contender.
It stands apart because the name incorporates:
- A single letter
- The character Æ
- A hyphenated alphanumeric ending
- References to mathematics, artificial intelligence, and aviation
Even among celebrity names, that combination is extraordinary.
Techno Mechanicus and Exa Dark Sideræl are close competitors because both sound distinctly futuristic and carry technological or astronomical associations.
Why Does Elon Musk Give His Kids Unusual Names?
There does not appear to be one universal explanation.
His children were named with different partners, and those parents clearly contributed their own tastes and ideas.
That is particularly obvious when comparing his children with Justine Wilson with those he shares with Grimes.
The earlier names lean considerably more traditional.
The Musk-Grimes names are experimental and technology-heavy.
The names shared with Shivon Zilis often feel literary, classical, or conceptual.
Rather than representing one naming rule, the overall list seems to reflect changing relationships, interests, cultural influences, and parental tastes over more than two decades.
Frequently Asked Questions About Elon Musk Kids Names
What are Elon Musks kids names?
Elon Musks 14 publicly known children are Nevada Alexander, Griffin, Vivian Jenna Wilson, Kai, Saxon, Damian, X Æ A-Xii, Exa Dark Sideræl, Strider, Azure, Techno Mechanicus, Arcadia, Romulus, and Seldon Lycurgus.
How many children does Elon Musk have?
As of October 2026, Elon Musk has 14 publicly known children with four women.
What is Elon Musks first childs name?
His first child was Nevada Alexander, whom Musk had with his former wife Justine Wilson in 2002.
What is Elon Musks youngest childs name?
Among the publicly known children, Seldon Lycurgus is one of the most recently announced. He was born to Musk and Shivon Zilis.
What are Elon Musk and Grimes kids names?
Elon Musk and Grimes share three children:
- X Æ A-Xii
- Exa Dark Sideræl
- Techno Mechanicus
Techno Mechanicus is commonly called Tau.
What are Elon Musk and Shivon Zilis kids names?
Musk and Shivon Zilis have four children:
- Strider
- Azure
- Arcadia
- Seldon Lycurgus
What is X Æ A-Xiis nickname?
He is usually known simply as X.
What is Exa Dark Sideræls nickname?
She is commonly referred to as Y.
What is Techno Mechanicus nickname?
Techno Mechanicus is commonly called Tau.
Is Romulus Elon Musks son?
Yes. Ashley St. Clair has publicly identified her son Romulus, born in 2024, as Musks child. Subsequent reporting has included him among Musks 14 publicly known children.
Final Thoughts
The complete list of Elon Musk kids names tells an unusually varied naming story.
Nevada, Griffin, Vivian, Kai, Saxon, and Damian largely belong to familiar modern naming traditions. Then come X Æ A-Xii, Exa Dark Sideræl, and Techno Mechanicus, names shaped by technology, science, and futuristic ideas.
Strider, Azure, Arcadia, Romulus, and Seldon Lycurgus introduce still another layer, drawing associations from color, fantasy literature, classical history, mythology, and science fiction.
Very few celebrity families demonstrate such a dramatic range of naming styles within a single family tree.
Whether you consider the names visionary, eccentric, meaningful, or simply unforgettable, one thing is difficult to dispute: Elon Musks childrens names are among the most distinctive in modern celebrity culture.
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