Elon Musk, the CEO of Tesla and SpaceX, is known for his innovative ventures and equally unconventional approach to naming his children. As of February 2025, Musk has fathered 13 children with four different women, each bearing a distinctive name that often sparks public curiosity and debate.

Children with Justine Wilson:

Nevada Alexander Musk (2002): Musk’s first child with Canadian author Justine Wilson. Tragically, Nevada passed away at 10 weeks old due to sudden infant death syndrome (SIDS).

Vivian Jenna Wilson (2004): Born as one of twins, Vivian transitioned and legally changed her name in 2022, adopting her mother’s maiden name to distance herself from Musk.

Griffin Musk (2004): Vivian’s twin brother.

Kai Musk (2006): Part of a set of triplets.

Saxon Musk (2006): Another of the triplets.

Damian Musk (2006): The third triplet.

Children with Grimes (Claire Boucher):

X Æ A-Xii Musk (2020): Commonly referred to as “X.” The name combines various elements: “X” stands for the unknown variable; “Æ” is an Elven spelling of AI, meaning artificial intelligence or “love” in some languages; “A-12” references the Archangel 12, a precursor to the SR-71 aircraft. The pronunciation is “X Ash A Twelve.”

Exa Dark Sideræl Musk (2021): Nicknamed “Y.” “Exa” refers to the supercomputing term exaFLOPS; “Dark” represents the unknown; “Sideræl” (pronounced “sigh-deer-ee-el”) is a nod to the true time of the universe, star time, and also a reference to Grimes’ favorite Lord of the Rings character, Galadriel.

Techno Mechanicus Musk (2023): Referred to as “Tau.” The name reflects a blend of technological and scientific themes, with “Tau” representing a Greek letter often used in scientific contexts.

Children with Shivon Zilis:

Strider Musk (2021): One of the twins born via IVF.

Azure Musk (2021): The other twin.

Unnamed Child (2024): Details about this child, born via surrogacy, remain private.

Child with Ashley St. Clair:

Unnamed Child (2024): In February 2025, conservative influencer Ashley St. Clair announced she had given birth to Musk’s 13th child five months prior. Specific details about the child’s name have not been publicly disclosed.

Musk’s approach to naming his children reflects his interests in technology, science fiction, and the cosmos, resulting in names that are both unique and laden with personal significance.