Elon Musk’s first child with Grimes was famously named X Æ A-12 Musk , later changed for legal reasons to X Æ A-Xii Musk.

Quick Scoop: What did Elon Musk name his kid?

For the viral baby everyone talks about, the name is:

  • Original name: X Æ A-12 Musk.
  • Updated official name: X Æ A-Xii Musk (using “Xii” instead of “12” in Roman numerals).
  • Parents: Elon Musk and the musician Grimes.
  • Birth: May 4, 2020.

People often just call him “X” as a nickname.

Why the name is so unusual

Grimes has explained parts of the meaning:

  • “X” stands for the unknown variable.
  • “Æ” is described as an Elven-style spelling tied to AI and also “love” in some language references.
  • The “A-12” part (now “Xii”) refers to the Lockheed A-12 reconnaissance aircraft, which Musk has said was his contribution to the name.

California’s naming rules meant they had to switch from “12” to the Roman numerals “Xii,” which is why the official name became X Æ A-Xii instead of X Æ A-12.

Other kids with unique names (bonus context)

If you’re thinking more broadly than just that one baby, Elon Musk has several children with very distinctive names, including:

  • Exa Dark Sideræl Musk (nicknamed “Y”).
  • Techno Mechanicus (nicknamed “Tau”).
  • Arcadia , Romulus , and Seldon Lycurgus , among others.

These names keep him at the center of celebrity baby-name discussions and trending forum threads.

TL;DR: The kid everyone asks about is officially named X Æ A-Xii Musk , originally X Æ A-12 Musk , often just called “X.”

Information gathered from public forums or data available on the internet and portrayed here.