The Complete List Of Elon Musk’s Sons: 7 Unique Names And The Shocking Meanings Behind Them (Updated 2025)

Billionaire entrepreneur Elon Musk has captured the world’s attention not just with his ventures at Tesla and SpaceX, but with his rapidly growing and uniquely named family. As of late 2024 and confirmed into 2025, the number of his children has reached a staggering 14, shared with three different women, making the task of keeping track of their names a global obsession. This article provides the most current and comprehensive breakdown of all of Elon Musk’s sons, detailing the origins of their extraordinary names, the mothers they share, and the latest updates on the newest additions to the Musk dynasty. The names chosen for his children reflect a fascinating mix of classical literature, science, and the avant-garde, from the traditional to the truly futuristic. The continuous expansion of his family, particularly the recent arrivals in 2024, ensures that the Musk family tree remains one of the most talked-about topics in the tech and celebrity world today.

Elon Musk’s Sons: A Complete Biographical Profile

The following list focuses specifically on the sons of Elon Musk, in chronological order of birth, including the most up-to-date information regarding their names and mothers.

• Nevada Alexander Musk
  • Mother: Justine Wilson (First Wife)
  • Born: May 2002
  • Status: Tragically passed away at 10 weeks old from Sudden Infant Death Syndrome (SIDS).
• Griffin Musk
  • Mother: Justine Wilson
  • Born: April 15, 2004 (Twin)
  • Note: Born via In Vitro Fertilization (IVF). His twin, Vivian, legally changed her name and gender in 2022.
• Kai Musk
  • Mother: Justine Wilson
  • Born: January 1, 2006 (Triplet)
  • Note: One of a set of triplets, also born via IVF.
• Saxon Musk
  • Mother: Justine Wilson
  • Born: January 1, 2006 (Triplet)
  • Note: Triplet with Kai and Damian.
• Damian Musk
  • Mother: Justine Wilson
  • Born: January 1, 2006 (Triplet)
  • Note: Triplet with Kai and Saxon.
• X Æ A-Xii Musk (Initially X Æ A-12)
  • Mother: Grimes (Claire Elise Boucher)
  • Born: May 4, 2020
  • Note: The name was legally changed from '12' to the Roman numeral 'Xii' to comply with California law, which prohibits numbers in a name.
• Strider Zilis Musk
  • Mother: Shivon Zilis (Neuralink Executive)
  • Born: November 2021 (Twin)
  • Note: Twin with Azure, born via IVF. The children reportedly carry their mother's surname, Zilis, as a middle name.
• Seldon Lycurgus Musk
  • Mother: Shivon Zilis
  • Born: 2024
  • Note: One of the newest additions to the family, confirmed to be a son and the fourth child with Shivon Zilis, alongside twins Strider and Azure, and daughter Arcadia.

The Meaning Behind the Most Unusual Names

Elon Musk and his partners have a penchant for names that are anything but ordinary, often blending pop culture, mathematics, and aerospace concepts. The most famous example is his first son with musician Grimes, whose name instantly became a global meme and a source of intense curiosity.

X Æ A-Xii: Decoded

The name of Musk's son with Grimes, X Æ A-Xii, is a complex linguistic puzzle that the parents themselves have broken down.

• X: According to Grimes, 'X' stands for "the unknown variable."
• Æ: This is the Elven spelling of 'Ai' (Artificial Intelligence) or 'Ash.' Musk himself has stated it's pronounced "Ash."
• A-Xii: This component is a tribute to the Lockheed SR-71 Blackbird's predecessor, the Archangel-12 (A-12). The A-12 is described by Grimes as their favorite aircraft, "no weapons, no defenses, just speed. Great in battle, but non-violent." The initial '12' was changed to the Roman numeral 'Xii' to satisfy California's naming laws, which do not permit Arabic numerals on a birth certificate.

The pronunciation has been a point of confusion, with Musk suggesting "Ex Ash A Twelve," while Grimes has offered slightly different interpretations over time, adding to the mystique of the child's identity.

The Classical and Futuristic Names of the Zilis Children

The children Elon Musk shares with Neuralink executive Shivon Zilis also carry names that hint at deep meaning, though they are more conventionally spelled than X Æ A-Xii. The twins, Strider and Azure, were born in November 2021. The names are unique and evocative. Strider, a name with roots in fantasy and literature (most notably Aragorn's nickname in *The Lord of the Rings*), suggests a traveler or a purposeful journey. Azure, meaning a bright blue color, often symbolizes the sky or clarity. The newest confirmed son, Seldon Lycurgus, born in 2024, carries a name with profound historical and literary weight.

• Seldon: This name is a clear nod to the character Hari Seldon from Isaac Asimov’s seminal science fiction series, *Foundation*. Hari Seldon is a mathematician who develops 'psychohistory' to predict the future of the galactic empire, a concept that aligns perfectly with Musk's long-term, civilization-scale ambitions.
• Lycurgus: This is the name of the legendary lawgiver of ancient Sparta, known for establishing the military-focused, austere society of Sparta. This choice reflects a deep interest in classical history and societal structure.

The First Five: The Wilson Sons and the Name Change

Elon Musk’s first five sons were born to his first wife, Canadian author Justine Wilson. The couple used IVF to conceive the twins, Griffin Musk and Vivian Jenna Wilson, and the triplets, Kai, Saxon, and Damian Musk. The names of the triplets—Kai, Saxon, and Damian—are relatively traditional compared to his later children, but they mark the beginning of his large family. The tragic loss of their first son, Nevada Alexander Musk, profoundly impacted the couple and their subsequent decision to use IVF to have more children. A significant update to this part of the family history is the legal transition of Griffin's twin. Born as Xavier Musk, the child legally changed her name in 2022 to Vivian Jenna Wilson, choosing to drop the Musk surname and identifying as female. This personal decision was a major news story, highlighting the complex and evolving dynamics within the family.

The Future of the Musk Family Line

The recent births in 2024 have solidified Elon Musk’s position as a prominent figure in the conversation about global birth rates and family structure. His stated belief in the importance of having children to combat declining birth rates is clearly reflected in his personal life. The latest confirmed additions include the son Seldon Lycurgus and daughter Arcadia with Shivon Zilis. Furthermore, a child was born to Musk and public figure Ashley St. Clair in September 2024, though the name and gender have yet to be publicly revealed as of early 2025. This potential 15th child suggests that the Musk family tree is likely to continue growing and evolving, adding more unique names to the list. The diverse and highly personalized names—from the classic Griffin and Damian to the futuristic X Æ A-Xii and the literary Seldon—underscore a family narrative that is as ambitious and unconventional as the man himself. Each name is a carefully chosen entity, a piece of a larger puzzle that reflects Musk's interests in science fiction, technology, and the future of human civilization. The world continues to watch closely as this extraordinary family story unfolds.