Lex

A boys’ name of Latin origin, meaning law; a form of Alexander or Alexis.

Babies a year
90
the US, 2017
Rarity
Very rare
among names in use
US popularity
—
outside the top 1000
UK popularity
#3256
6 babies

Lex by the numbers

In 2025, 6 babies in England and Wales were named Lex. In the US, 90 were, though that figure is from 2017, the most recent full year we hold.

For the size of the two countries, it is given noticeably more often in the US than in England and Wales.

Its American peak was 94 babies in 2012, making it a 2010s name.

Other names that come from Alexander

Like Lex, each of these traces back to Alexander: a form of it, a name built from it, or a son or daughter of it. Not always the same sex.

  • Alexanderdefender of the people12,488 in the US (2017)
  • Alexdefender, helper; short form of Alexander or Alexis2,766 in the US (2017)
  • Xanderdefender of mankind; short form of Alexander2,403 in the US (2017)
  • Alejandrodefender of men; Spanish form of Alexander2,027 in the US (2017)
  • Zanderdefender of men; a diminutive of Alexander1,551 in the US (2017)
  • Alexandriadefender of mankind; a form of Alexander1,238 in the US (2017)
  • Alecdefender of men; short form of Alexander569 in the US (2017)
  • Alessandrodefender of men; Italian form of Alexander401 in the US (2017)

Other names that come from Alexis

Like Lex, each of these traces back to Alexis: a form of it, a name built from it, or a son or daughter of it. Not always the same sex.

  • Alexisdefender, helper2,847 in the US (2017)
  • Alexdefender, helper; short form of Alexander or Alexis2,766 in the US (2017)
  • Lexidefender of men; diminutive of Alexandra or Alexis938 in the US (2017)
  • Lexiedefender of men; diminutive of Alexis348 in the US (2017)
  • Alexysdefender of mankind; a form of Alexis25 in the US (2017)
  • Alexiedefender of mankind; a form of Alexis24 in the US (2017)
  • Lexi-Maedefender of mankind; a form of Alexis combined with Mae14 in England and Wales (2025)
  • Lexiidefender of mankind; a form of Alexis14 in the US (2017)

Spelled almost the same

Other names in the records within a letter or two of Lex. Close spellings are not always related names, but they are usually worth seeing together.

  • Leolion3,278 in England and Wales (2025)
  • Leemeadow, clearing385 in the US (2017)
  • Levheart32 in England and Wales (2025)
  • Luxlight122 in the US (2017)
  • Leslion; short form of Lesley or Leslie12 in the US (2017)
  • Lenstrong lion; a form of Leonard8 in the US (2017)

Sounds like Lex

Names that are said the same way as Lex, however they are written. Sounding alike does not mean they share a history.

  • Lexxdefender of mankind; a form of Alexander5 in the US (2017)

Names about as common as Lex

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