Elon Musk has 14 publicly identified children with four women. His children include several twins and triplets, and some of their names have unusual spellings or meanings. One of his children, Nevada Alexander, died in infancy.
The complete list is:
- Nevada Alexander
- Griffin
- Vivian Jenna Wilson
- Kai
- Saxon
- Damian
- X Æ A-Xii
- Exa Dark Sideræl
- Techno Mechanicus
- Strider
- Azure
- Arcadia
- Seldon Lycurgus
- Romulus
Elon Musk’s Children With Justine Wilson
Elon Musk and Canadian author Justine Wilson had six children. Their first son, Nevada Alexander, died at 10 weeks old in 2002. They later had twins and triplets.
1. Nevada Alexander
Nevada Alexander was Musk and Justine Wilson’s first child. He was born in 2002 and died in infancy.
2. Griffin
Griffin was born in 2004 as one of Musk and Wilson’s twins. His twin sibling is Vivian Jenna Wilson.
3. Vivian Jenna Wilson
Vivian Jenna Wilson was born in 2004 as Griffin’s twin. She later changed her name and uses her mother’s surname, Wilson.
4. Kai
Kai is one of the triplets born to Musk and Wilson in 2006.
5. Saxon
Saxon is another member of the 2006 triplets. He was born alongside Kai and Damian.
6. Damian
Damian is the third of the triplets born in 2006. Biographical reporting has described him as having interests and ability in music, mathematics, and physics.
Elon Musk’s Children With Grimes
Musk and musician Grimes have three children: X Æ A-Xii, Exa Dark Sideræl, and Techno Mechanicus. Their names have received particular attention because of their unusual forms and the explanations Grimes has given for them.
7. X Æ A-Xii
X Æ A-Xii was born in 2020. The child is commonly known as X.
Grimes explained that the name combines several references, including the unknown variable “X,” artificial intelligence, and the Lockheed A-12 aircraft. The spelling was changed from the originally announced “X Æ A-12” to meet California naming requirements.
8. Exa Dark Sideræl
Exa Dark Sideræl was born in December 2021 via surrogate and is commonly called Y.
According to Grimes, “Exa” refers to exaFLOPS, while “Dark” relates to the unknown and dark matter. “Sideræl” refers to sidereal time and the stars.
9. Techno Mechanicus
Techno Mechanicus is Musk and Grimes’ third child. He is also known by the nickname Tau.
His birth became publicly known through Walter Isaacson’s biography of Musk, with later reporting identifying him as the couple’s third child.
Elon Musk’s Children With Shivon Zilis
Musk has four publicly identified children with Shivon Zilis: Strider, Azure, Arcadia, and Seldon Lycurgus.
10. Strider
Strider is one of Musk and Zilis’ twins, born in November 2021. His name became public in 2023.
11. Azure
Azure is Strider’s twin sister. She was also born in November 2021. Her name was publicly revealed alongside Strider’s in 2023.
12. Arcadia
Arcadia is Musk and Zilis’ third publicly identified child. She was born in 2024, according to later reporting.
13. Seldon Lycurgus
Seldon Lycurgus is Musk and Zilis’ fourth publicly identified child. Zilis announced his birth in February 2025 but did not disclose his exact birth date. Reuters reported that he was Musk’s 14th child at the time of that announcement.
Elon Musk’s Child With Ashley St. Clair
14. Romulus
Romulus is the son of Elon Musk and writer Ashley St. Clair. St. Clair announced in February 2025 that Musk was the father of her son, who had been born in September 2024. His first name was later reported as Romulus.
PEOPLE reported that a Labcorp paternity test gave a 99.9999% probability of paternity, with the result confirmed to the publication by a spokesperson for St. Clair.
How Many Children Does Elon Musk Have?
Public reporting currently identifies 14 children. This number includes Nevada Alexander, who died in infancy, meaning 13 of the publicly identified children are living.
The number has changed over time because some births were initially private and became public later. For example, Seldon Lycurgus was announced by Shivon Zilis in 2025.
It is also important to distinguish publicly identified children from unverified reports about possible additional children. This article lists the children supported by established public reporting.
Why Are Elon Musk’s Children’s Names So Unusual?
Several of Musk’s children have names that stand out because they combine traditional names with literary, scientific, technological, or invented elements.
The most notable example is X Æ A-Xii. Grimes publicly explained several parts of the name, including references to mathematics, artificial intelligence, and an aircraft.
Exa Dark Sideræl also has a highly specific construction. Grimes connected “Exa” with computing and “Sideræl” with sidereal or star-related time.
Other names, such as Arcadia, Romulus, and Seldon Lycurgus, have a more traditional or literary sound while still being uncommon in everyday naming.
Elon Musk Children’s Names at a Glance
For easy reference, the publicly identified names are:
Justine Wilson
- Nevada Alexander
- Griffin
- Vivian Jenna Wilson
- Kai
- Saxon
- Damian
With Grimes
- X Æ A-Xii
- Exa Dark Sideræl
- Techno Mechanicus
Shivon Zilis
- Strider
- Azure
- Arcadia
- Seldon Lycurgus
With Ashley St. Clair
- Romulus
This gives a total of 14 publicly identified children.
Frequently Asked Questions
1. What are Elon Musk’s children’s names?
Elon Musk’s 14 publicly identified children are Nevada Alexander, Griffin, Vivian Jenna Wilson, Kai, Saxon, Damian, X Æ A-Xii, Exa Dark Sideræl, Techno Mechanicus, Strider, Azure, Arcadia, Seldon Lycurgus, and Romulus.
2. How many children does Elon Musk have?
Public reporting identifies 14 children. Nevada Alexander died in infancy, so 13 of the publicly identified children are living.
3. Who is Elon Musk’s first child?
His first publicly known child was Nevada Alexander, born in 2002 to Musk and Justine Wilson. Nevada died at 10 weeks old.
4. What is the name of Elon Musk’s child with Grimes?
Musk and Grimes have three publicly identified children: X Æ A-Xii, Exa Dark Sideræl, and Techno Mechanicus.
5. What is Elon Musk’s child named X?
X is the commonly used name for X Æ A-Xii, Musk’s first child with Grimes.
6. What is Elon Musk’s daughter named Y?
Exa Dark Sideræl is commonly referred to as Y by her parents. She is Musk and Grimes’ daughter.
7. Who are Elon Musk’s children with Shivon Zilis?
Their publicly identified children are Strider, Azure, Arcadia, and Seldon Lycurgus.
8. Who is Romulus?
Romulus is the son of Elon Musk and Ashley St. Clair. Public reporting identifies him as Musk’s 14th publicly identified child.
Conclusion
The names of Elon Musk’s publicly identified children span a wide range of naming styles. They include familiar names such as Griffin, Kai, Damian, and Vivian, along with highly distinctive names such as X Æ A-Xii, Exa Dark Sideræl, Techno Mechanicus, and Seldon Lycurgus.
As of 2026, reliable public reporting identifies 14 children, including Nevada Alexander, who died in infancy. Because some family details were disclosed years after the births, older articles may show a smaller number.
Read more about!
- Cool Knight Names: 200+ Powerful, Noble, and Fantasy Ideas
- Nail Polish Names: 200+ Creative, Cute, Funny, and Unique Ideas
- French Girl Names: Beautiful, Classic, Modern, and Elegant Ideas
I’m Noah Wilson, a name enthusiast and writer at NamesProx. I enjoy researching and sharing creative, meaningful, and unique name ideas, from baby and pet names to character, fantasy, cultural, and business names. My goal is to make finding the perfect name simple, enjoyable, and useful for everyone.
