Emma Girl
EH-muh
“whole, universal” · Germanic
#3
Lux
UnisexLatin· “light”
- Meaning
- light
- Origin
- Latin
- Pronunciation
- LUKS
- Syllables
- 1
- US rank 2025
- #2,918
- US babies 2025
- 58
- Best rank
- #1,689 (2014)
- Peak year
- 2014
Meaning and origin of Lux
Lux is a Latin name that means “light”.
Latin for 'light', lux survives in scientific English as the unit of illuminance. As a given name it is a recent choice, appreciated for its short, striking sound and its bright meaning. It connects to a family of light names, including Lucius, Lucy and Lucia, all built on the same Latin root. Lux works for both boys and girls, and it can stand alone or serve as a nickname for longer names like Lucas or Luxana. Its crisp single syllable gives it a modern, slightly edgy character.
Popularity over time
Lux first appears in US Social Security records in 2001. It has never ranked in the national top 1,000, which keeps it genuinely uncommon. Its best national rank was #1,689 in 2014, the same year it reached its highest count of 125 babies. In 2025, 58 babies were named Lux, and it ranked #2,918 nationally. That is 42% fewer than ten years earlier, so it is becoming less common.
Its national rank moved from #2,283 in 2010 and #2,918 in 2025. Of the 1,653 US girls named Lux since records began, 59% were born in the 2010s, its biggest decade. The 2020s come next, with 539 babies.
Other babies' names that peaked around the same time include Justyce, Micaiah, Charly, Lyrik, and Tenzin.
Where it is most popular (2025)
In 2025, Lux ranked highest in California and Texas.
| State | Rank there | Babies |
|---|---|---|
| California | #2406 | 8 |
| Texas | #3152 | 6 |
Gender, sound and spelling
Lux is used for both boys and girls: over the last 20 years about 51% of US babies named Lux were girls and 49% were boys.
Lux is usually pronounced LUKS, with one syllable. It has three letters, starts with L and ends in “-ux”.
Middle names for Lux
A few middle names that flow with Lux: each avoids a matching first letter, a rhyme and a vowel clash where the names meet.
Sibling names for Lux
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Lists that include Lux
Frequently asked questions
What does the name Lux mean?
Lux is a Latin name that means “light”.
What is the origin of the name Lux?
Lux has Latin roots. Latin for 'light', lux survives in scientific English as the unit of illuminance.
Is Lux a popular name?
Not especially. Lux ranked #2,918 in the US in 2025, which puts it outside the top 1,000.
Is Lux a boy or girl name?
Lux is used for both boys and girls: over the last 20 years about 51% of US babies named Lux were girls and 49% were boys.
How do you pronounce Lux?
Lux is usually pronounced LUKS. Stressed syllables are in capital letters.
Popularity figures come from US Social Security card applications (names given to at least five babies in a year, 1880 to 2025). How we source names and meanings