Elon Musk is the father of 12 children. Sadly, his first child, son Nevada Alexander Musk, died at just 10 weeks old as a result of SIDS, in 2002. The rest of his kids range in age from newborn to about 20 years old. In February 2025, a conservative influencer took to social media, claiming that she gave birth to Musk's 13th child, but Musk has not publicly claimed the baby. Who are the mothers of Elon Musk's kids?
Musk's first six children were with his first wife, Canadian author Justine Wilson, to whom he was married from 2000 to 2008. Wilson has been candid about the marriage, stating, "I was a starter wife" as part of a revealing essay in Marie Claire.
Grimes
Musk shares three children with his former romantic partner, singer Grimes, who gave birth to their son X Æ A-Xii in May 2020. They then welcomed a daughter, Exa Dark Sideræl, via surrogate in December 2021. Their third child, Techno Mechanicus, nicknamed Tau, was kept private until author Walter Isaacson referred to Grimes as "the mother of three of Musk’s children" in his book about the billionaire, Elon Musk.
In November 2021, between the birth of his first two children with Grimes, Musk welcomed a set of twins with employee Shivon Zilis, the Neuralink director of operations and special projects. Ashley St. Clair
Musk’s firstborn son, Nevada Alexander Musk, was born in 2002. Tragically, young Nevada passed away from SIDS at only 10 weeks old. Nevada’s mother, author Justine Wilson, wrote about the heartbreaking loss in an essay for Marie Claire in 2010.
Musk has remained mostly silent (at least in public) about the loss of his son. However, in an email expressing his sympathy to a father who lost his 18-year-old son in a Tesla crash in 2018, he wrote, “There is nothing worse than losing a child. My firstborn son died in my arms. I felt his heartbeat.”
Wilson wrote about her journey with IVF, which was complicated by her grief over Nevada’s tragic loss. “I buried my feelings ... coping with Nevada's death by making my first visit to an IVF clinic less than two months later. Elon and I planned to get pregnant again as swiftly as possible.”
In the petition, Vivian explained her reasoning, including her desire to drop her father’s last name, writing, “Gender Identity and the fact that I no longer live with or wish to be related to my biological father in any way, shape or form."
Kai Musk, Saxon Musk and Damian Musk
Musk’s then-wife, Canadian author Justine Wilson, gave birth to triplet sons Kai, Saxon and Damian Musk in January 2006. The triplets turned 18 this year. Both Wilson and Elon have declined to speak publicly about the triplets at any great length, though Wilson did confirm the trio was also conceived via IVF in a 2017 TedTalk.
He explained, “Custody of our five children is split evenly. Almost all of my non-work waking hours are spent with my [children], and they are the love of my life.”
However, in a 2021 interview on the Clubhouse app, Musk has admitted that the majority of his children’s education may have come from another source.
Elon Musk and singer Grimes welcomed their first child together on May 4, 2020. Their son was initially called X Æ A-12, but his name was later changed to X Æ A-Xii.
“•X, the unknown variable ⚔️
•A-12=precursor to SR-17 (our favorite aircraft). No weapons, no defenses, just speed. Great in battle, but non-violent ?
(A=Archangel, my favorite song)
The singer revealed her pregnancy in January 2020 with a photo of her baby bump.
Azure and Strider
Just a month after welcoming a set of twins with Shivon Zilis, Elon Musk and Grimes welcomed a daughter, Exa Dark Sideræl Musk, born via surrogate, in December 2021. The parents nicknamed the child “Y” due to her brother having the moniker “X.”Techno Mechanicus (aka Tau)
Elon Musk welcomed his 12th child (and third with Neuralink executive Shivon Zilis) sometime in the first half of 2024. Although the news didn't break publicly for months, Musk told Page Six that his youngest child wasn't a "secret."
Baby No. 13 (name and sex have not been revealed)
Conservative influencer Ashley St. Clair claimed on Feb. 14, 2025 that she welcomed a child with Musk five months earlier. "I have not previously disclosed this to protect our child's privacy and safety, but in recent days it has become clear that tabloid media intends to do so, regardless of the harm it will cause," she tweeted. Parade reached out to representatives for St. Clair and Musk but did not hear back in time for publication.
Why did Grimes accuse Elon Musk of not letting her see their son?
"Tell Shivon to unblock me and tell Elon to let me see my son or plz respond to my lawyer. I have never even been allowed to see a photo of these children until this moment, despite the situation utterly ripping my family apart," she wrote in the since deleted tweet.
She went on to explain that she and Zilis have talked and are now on good terms. "Women are so often pitted against each other. Speaking with Shivon, it's very evident she's an amazing human and we both just want what's best for our kids."
Elon Musk has been very vocal about the reasoning behind his large number of offspring. He tweeted in July 2022, “Doing my best to help the underpopulation crisis. A collapsing birth rate is the biggest danger civilization faces by far.”
He continued, “I think one of the biggest risks to civilization is the low birth rate and the rapidly declining birthrate. Please look at the numbers—if people don't have more children, civilization is going to crumble, mark my words."
How do you say Elon Musk's kids' names?
The pronunciations for the majority of Elon Musk’s children’s names are pretty self-explanatory. However, it's understandable if you need some help with saying the names of his children with singer Grimes, X Æ A-Xii and Exa Dark Sideræl Musk.
Grimes tweeted the following explanation, "It's just X, like the letter X. Then A.I. Like how you said the letter A then I."
We’d probably stick with calling him “X” too!
She further explained, “People fear it but truly it's the absence of photons. Dark matter is the beautiful mystery of our universe."
Grimes said the word was “a more elven” spelling of sidereal, a word she explained as “the true time of the universe, star time, deep space time, not our relative earth time,” in addition to being a nod to Grimes’ favorite character from Lord of the Rings, who “chooses to abdicate the ring.”
In a March 2023 comment on Twitter accompanying a rare picture of the child, Grimes elaborated, “She's Y now, or ‘Why?’ or just ‘?’ (But the government won't recognize that). curiosity, the eternal question, .. and such."
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