What does Kian mean?
Kian comes from the Irish Cian, “ancient” or “enduring.”
What does Kieran mean?
Anglicized from Irish Ciaran, a diminutive of 'ciar' meaning 'black, dark', giving 'little dark one'. Borne by several early Irish saints.
Kian vs Kieran
Which is more popular?
Kieran is more popular than Kian today: about 817 US babies were given the name Kieran in 2025, compared with 797 named Kian.
| Kian | Kieran | |
|---|---|---|
| Meaning | Ancient, enduring | little dark one |
| Origin | Irish | irish |
| Gender | Boy | Boy |
| Pronunciation | KEE-un | KEER-uhn |
| Syllables | 2 | 2 |
| First appeared | 1970 | 1918 |
| Peak year | 2025 (797) | 2025 (817) |
| In 2025 | 797 | 817 |
| Trend | Near its peak | Near its peak |
Popularity over time, 1880–2025
Kian
Kieran
Source: US Social Security Administration.
Births by decade
| Decade | Kian | Kieran |
|---|---|---|
| 2020s | 4,304 | 3,946 |
| 2010s | 5,452 | 5,282 |
| 2000s | 2,787 | 4,412 |
| 1990s | 698 | 2,177 |
| 1980s | 138 | 610 |
| 1970s | 78 | 415 |
| 1960s | 0 | 374 |
| 1950s | 0 | 222 |
| 1940s | 0 | 81 |
| 1930s | 0 | 48 |
| 1920s | 0 | 38 |
| 1910s | 0 | 8 |
Frequently asked questions
Is Kian or Kieran more popular?
Kieran is more popular than Kian today: about 817 US babies were given the name Kieran in 2025, compared with 797 named Kian.
What is the difference between Kian and Kieran?
Kian means Ancient, enduring (Irish origin), while Kieran means little dark one (irish origin).
Which name is older, Kian or Kieran?
In US records, Kian first appears in 1970 and Kieran in 1918, so Kieran has the longer recorded history.