Noah Boy
NOH-uh
“rest, comfort” · Hebrew
#2
Kylian
BoyIrish, French· “form of Cillian; meaning uncertain”
- Meaning
- form of Cillian; meaning uncertain (origin disputed)
- Origin
- Irish, French
- Pronunciation
- KIH-lee-uhn
- Syllables
- 2
- US rank 2025
- #624
- US babies 2025
- 448
- Best rank
- #346 (2023)
- Peak year
- 2023
Meaning and origin of Kylian
Kylian is often said to mean “form of Cillian; meaning uncertain”; the origin is uncertain, though it is usually linked to Irish and French roots.
Kylian is a form of Cillian, the Irish name of uncertain meaning, often linked to cill, "church," or to a word glossed as "strife." Saint Cillian, also known as Kilian, was an Irish missionary who worked in Franconia and was martyred at Würzburg, where he is still honored. The name spread through France and Germany in various spellings. The Kylian spelling became widely known through French footballer Kylian Mbappé. Pronounced KIH-lee-uhn, it has a soft, lyrical sound. Kylian suits parents who want an internationally recognized name with Irish roots and European flair.
Popularity over time
Kylian first appears in US Social Security records in 2005. It has ranked in the top 1,000 in 6 different years, starting in 2019. Its best national rank was #346 in 2023, the same year it reached its highest count of 950 babies. In 2025, 448 babies were named Kylian, and it ranked #624 nationally. That is 3633% more than ten years earlier, so it is clearly on the rise.
Of the 3,738 US boys named Kylian since records began, 85% were born in the 2020s, its biggest decade.
Other boys' names that peaked around the same time include Rhys, Raiden, Kade, Odin, and Ezequiel.
Where it is most popular (2025)
In 2025, Kylian ranked highest in Florida, Connecticut, and North Carolina.
| State | Rank there | Babies |
|---|---|---|
| Florida | #400 | 49 |
| Connecticut | #421 | 7 |
| North Carolina | #442 | 25 |
| Massachusetts | #452 | 11 |
| Maryland | #456 | 11 |
Gender, sound and spelling
In the US it is used almost only for boys.
Kylian is usually pronounced KIH-lee-uhn, with two syllables. It has six letters, starts with K and ends in “-an”.
Middle names for Kylian
A few middle names that flow with Kylian: each avoids a matching first letter, a rhyme and a vowel clash where the names meet.
Sibling names for Kylian
Similar names
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Lists that include Kylian
Frequently asked questions
What does the name Kylian mean?
Kylian is often said to mean “form of Cillian; meaning uncertain”; the origin is uncertain, though it is usually linked to Irish and French roots.
What is the origin of the name Kylian?
Kylian has Irish and French roots. Kylian is a form of Cillian, the Irish name of uncertain meaning, often linked to cill, "church," or to a word glossed as "strife." Saint Cillian, also known as Kilian, was an Irish missionary who worked in Franconia and was martyred at Würzburg, where he is still honored.
Is Kylian a popular name?
Yes. Kylian ranked #624 in the US in 2025, which makes it in the top 1,000.
Is Kylian a boy or girl name?
Kylian is mainly a boy's name. In the US it is used almost only for boys.
How do you pronounce Kylian?
Kylian is usually pronounced KIH-lee-uhn. 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