Ciarán vs Jason
Ciarán and Jasoncompared on official birth-registration statistics and Namewise's recorded data. This page states what each name's record shows — it never picks a winner or scores one name against the other.
Head to head
Ranks are only compared within one published list and one year. Two ranks from different years, from a boys' and a girls' list, or from different registrars are not comparable, so they are not placed side by side.
Republic of Ireland · Boys
In 2025, Ciarán was ranked #149 and Jason #135 among boys in Republic of Ireland.
Ciarán and Jason over time
Ciarán and Jason appear together in 1 published list, across 8 years of shared records. Neither was ahead in more lists than the other.
The order between them changed and held in one of those lists — a change in that published list, never a claim that one name displaced the other.
Jason reached its own highest recorded position earlier in 1 of those lists, and Ciarán in none. Each position is a place inside its own list, so this compares when they peaked and never how high.
Counted list by list. Two names in the same published list are measured on the same scale in the same year, so those comparisons are real — but positions from different lists are not, so nothing here is combined into an overall standing.
List by list
Republic of Ireland · Boys8 shared years, 2018–2025
Ciarán held the stronger position in 4 of those years, Jason in 4.
Highest recorded here: Ciarán #115 in 2023, Jason #119 in 2018.
The order changed in 2024: Jason moved ahead. In 2023 they stood at #115 and #193; by 2024 that had become #200 and #162.
Most recent shared year, 2025: Ciarán #149, Jason #135.
Two names moving past each other in a ranking is a fact about the ranking. Namewise does not claim one name displaced the other, that families chose between them, or that either influenced the other — none of that is in this data.
Side by side
| Field | Ciarán | Jason |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Editorially researched profile |
| Gender usage | male | male |
| Meaning | Not yet recorded | From Ancient Greek Iason, meaning 'healer'. In Greek mythology, Jason led the Argonauts in the quest for the Golden Fleece; the name also appears in the New Testament as a Hellenized form possibly of a Hebrew name. |
| Origin | Not yet recorded | Greek |
| Pronunciation | Not yet recorded | /ˈd͡ʒeɪ.sən/ |
| Syllables | 1 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | IE | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ |
| Most recent popularity observation | Republic of Ireland · Boys #149 (2025) | Republic of Ireland · Boys #135 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | 90/100 |
| Spelling simplicity (demonstration score) | 88/100 | 94/100 |
| International familiarity (demonstration score) | 40/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Jason has a recorded origin (Greek); Ciarán does not have one recorded yet.
- Ciarán has 1 syllable, compared with 2 for Jason.
- A meaning is recorded for Jason; Ciarán doesn't have one written yet.
- Both names have recorded usage in IE.
How each name got here
Ciarán
Popularity journey
First recorded2018
First recorded at #117 among boys in Republic of Ireland in 2018 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded2018–2025
Highest recorded position: #115 among boys in Republic of Ireland, in 2023 (recorded 2018–2025).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #149 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys
Jason
Popularity journey
First recorded1964
First recorded at #100 among boys in New South Wales, Australia in 1964 — the earliest year that source publishes this name, not necessarily the earliest it was used.
New South Wales, Australia · Boys
Highest recorded1964–2005
Highest recorded position: #1 among boys in New South Wales, Australia, in 1971 (recorded 1964–2005).
New South Wales, Australia · Boys
Most recent2025
Most recently recorded at #135 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys