Elon Musk Children: A Complete Guide to Elon Musk’s Family and Kids

When it comes to global tech icons, Elon Musk stands at the forefront — not only as the CEO of Tesla, SpaceX, and X (formerly Twitter), but also as a figure of public curiosity due to his unique and growing family. In this article, we offer a comprehensive and up-to-date exploration of Elon Musk’s children, including their names, birth years, mothers, public appearances, and how his family life intersects with his extraordinary career.

Elon Musk’s Children: An Overview

As of 2025, Elon Musk is the father of 11 children — a fact that has sparked widespread public interest. Musk’s views on population decline, his unconventional relationships, and his advocacy for reproductive growth contribute to the intrigue surrounding his personal life.

Here is a detailed breakdown of Elon Musk’s children, their origins, and key facts about each of them.

The Firstborn: Nevada Alexander Musk

Born: 2002
Mother: Justine Musk (née Wilson)

Elon Musk’s first child, Nevada Alexander Musk, was born in 2002. Tragically, Nevada passed away at just 10 weeks old due to Sudden Infant Death Syndrome (SIDS). Musk and his first wife, Justine, were devastated by the loss, which became a defining moment in Musk’s early personal life.

Twins: Griffin and Vivian Jenna Musk

Born: 2004
Mother: Justine Musk
Birth Method: In vitro fertilization (IVF)

Two years after the loss of Nevada, Musk and Justine welcomed twins, Griffin and Xavier Musk (now known as Vivian Jenna Wilson). Vivian made headlines in 2022 when she legally changed her name and gender, publicly distancing herself from her father. She cited the desire “to no longer be related to my biological father in any way” in her court documents.

• Griffin Musk has remained out of the public spotlight.

• Vivian Jenna Wilson, who took her mother’s maiden name, has become a symbol of personal identity and autonomy in the Musk family.

Triplets: Kai, Saxon, and Damian Musk

Born: 2006
Mother: Justine Musk
Birth Method: IVF

Following the birth of their twins, Elon and Justine had triplets in 2006: Kai, Saxon, and Damian Musk. These three children have largely stayed away from media attention and live private lives. However, they are known to have been raised with strong educational support and exposure to Musk’s interests in science and technology.

Musk and Justine divorced in 2008, but they share custody of the five surviving children from their marriage.

X Æ A-12 Musk (a.k.a. X)

Born: May 2020
Mother: Claire Boucher (Grimes)

In 2020, Elon Musk and Canadian artist Grimes welcomed their first child together, a boy named X Æ A-12 Musk. Due to California naming laws, the child’s name was officially registered as X AE A-Xii Musk, but Musk and Grimes refer to him simply as “X.”

This name became a viral sensation due to its unconventional spelling and symbolic meaning:

• X stands for the unknown variable.

• Æ is a character used in some languages and represents “Ai” or artificial intelligence.

• A-12 references the Archangel-12, the precursor to the SR-71 Blackbird, which is Musk and Grimes’s favorite aircraft.

Exa Dark Sideræl Musk (a.k.a. Y)

Born: December 2021 (via surrogate)
Mother: Grimes

Their second child, a daughter named Exa Dark Sideræl Musk, was born via surrogate. Nicknamed “Y,” she was introduced to the world through a Vanity Fair interview that was interrupted by her cries from another room. Grimes explained:

• Exa refers to exascale computing, a nod to ultra-high-speed tech.

• Dark signifies the unknown and the beauty of mystery.

• Sideræl (pronounced “sigh-deer-ee-el”) is a time-related term from deep space and a homage to Galadriel from The Lord of the Rings.

Techno Mechanicus (a.k.a. Tau)

Born: Mid-2022
Mother: Grimes

The third child shared by Musk and Grimes is Techno Mechanicus, referred to affectionately as Tau. The name remains shrouded in mystery, but it aligns with Musk’s tendency to blend technology, mathematics, and mythology into personal naming conventions.

“Tau” might be a reference to the Greek letter (τ) often used in mathematics to represent 2π, or the golden ratio, as Musk has a known fascination with numerical beauty.

Twins with Shivon Zilis

Born: November 2021
Mother: Shivon Zilis

In a surprise revelation in 2022, court documents revealed that Musk fathered twins with Shivon Zilis, a top executive at Neuralink, the brain-computer interface company co-founded by Musk.

Their names are:

• Strider Musk

• Azure Musk

Born just weeks before daughter Y, the twins with Shivon Zilis sparked conversations about Musk’s intertwining personal and professional relationships.

Parenting Philosophy and Elon Musk’s Views on Population

Musk has consistently voiced concern over declining birth rates, stating, “Population collapse is potentially the greatest risk to the future of civilization.” His pro-natalist stance is echoed in his willingness to expand his own family, despite intense career demands.

He has stated in interviews that he wants to ensure his children contribute meaningfully to the future of humanity, often involving them in his work environments, such as SpaceX facilities and Tesla factories.

Musk also emphasizes the value of direct learning, once tweeting about founding Ad Astra, a secretive school reportedly established for his children and a few select students, focusing on problem-solving over traditional grading.

Co-Parenting and Relationships with the Mothers of His Children

Elon Musk’s relationships with the mothers of his children vary in visibility and nature:

• Justine Musk has co-parented the five boys from their marriage amicably, with public respect for each other’s roles.

• Grimes described her relationship with Musk as “fluid,” even calling him her “best friend” in interviews.

• Shivon Zilis has remained mostly out of the spotlight, with limited public statements about her relationship with Musk or the upbringing of their twins.

Despite these complex dynamics, Musk maintains active involvement in his children’s lives, often flying them to different locations or having them stay at his residences.

Media Attention and Privacy Concerns

Although Elon Musk lives a hyper-public life, he has expressed concern over his children’s privacy. He often avoids posting images or updates unless publicly known or shared voluntarily, such as baby X’s occasional appearances on stage or during interviews.

His daughter Vivian’s decision to disassociate from him legally and socially further highlights the complexity and emotional weight that accompanies his familial role.

Conclusion: The Legacy of Elon Musk’s Children

With 11 children from three different mothers, Elon Musk’s family tree is as unconventional and futuristic as his companies. Each child carries a name rich in symbolism, mystery, and technological significance — a reflection of Musk’s persona.

As the world watches his professional ventures evolve, many are equally intrigued by the next generation of Musks — children born at the intersection of genius, ambition, and controversy. Whether they follow in their father’s footsteps or blaze new paths entirely, they remain an integral part of Musk’s expanding legacy.

Key Takeaways on Elon Musk’s Children

FAQs About Elon Musk’s Kids

Q: How many children does Elon Musk have in total?
A: Elon Musk has 11 children as of 2025.

Q: How many children does Elon Musk have with Grimes?
A: Elon Musk and Grimes share three children: X, Y, and Tau.

Q: Did Elon Musk’s daughter really change her name?
A: Yes. Vivian Jenna Wilson, formerly Xavier Musk, legally changed her name and gender identity in 2022.

Q: What is the name of Elon Musk’s mysterious third child with Grimes?
A: Techno Mechanicus, also known as Tau.