Names › Boys' names › D › Declan
Declan
Meaning: uncertain; perhaps 'full of goodness' · Origin: Irish · Gender: usually a boy's name
Origin & history
From Saint Declán of Ardmore, a 5th-century Irish missionary. The meaning of the Irish is uncertain.
Famous people named Declan
- Declan McKenna (singer)
Nicknames
Dec, Deco
Variants & related names
Deaglán
Declan name art
A free preview of a printable “Declan” poster with its meaning — great for a nursery, a birthday or a gift.
Instant download, no subscription. Not printed or shipped — you get a high-resolution PNG to print at home or at a print shop.
FAQ
What does the name Declan mean?
Declan means “uncertain; perhaps 'full of goodness'”. It comes from Irish.
Is Declan a popular name?
Yes — Declan has been one of the most popular boys' names in the United States in the 2020s, according to US Social Security Administration baby-name data.
What are nicknames for Declan?
Dec, Deco.
What are other forms of Declan?
Deaglán.
Similar names
Connor · Brayden · Rowan · Kevin · Finn · Oscar
More: names starting with D · all boys' names
Sources: standard name etymology references (e.g. Behind the Name, Oxford Dictionary of First Names); popularity from US SSA and UK ONS baby-name data. Meanings of old names are often debated — where scholars disagree we say so.