Celtic Boy Names
“Celtic” isn’t one language but a family of six living ones: Irish, Scottish Gaelic and Manx on the Gaelic side, and Welsh, Breton and Cornish on the Brittonic side. That’s why a Celtic boy name can be as familiar as Liam or as wonderfully tricky as Tadhg. Below are more than 95 names grouped by nation, each with its meaning and, where the spelling could trip you up, a pronunciation guide.
Many of these names come from saints, kings and the heroes of the old sagas, so they tend to carry big meanings — “little fire,” “sea warrior,” “fair-haired.” If you want to go deeper into one tradition, browse our full lists of Irish boy names, Scottish boy names and Welsh boy names, or head back to the main Celtic names page for girls and unisex picks.
Irish Celtic boy names (with pronunciation)
Irish spelling follows its own rules — dh and gh are often silent, and bh or mh sound like “v.” Here’s how to say each one.
| Name | Pronunciation | Meaning |
|---|---|---|
| Cian | KEE-an | Ancient, enduring |
| Oisín | uh-SHEEN | Little deer; the poet-son of Fionn mac Cumhaill |
| Tadhg | TIGE (rhymes with tiger, minus the r) | Poet, philosopher |
| Darragh | DAR-ah | Oak tree |
| Fearghal | FAR-uhl | Man of valor |
| Cillian | KILL-ee-an | Possibly “church” or “little warrior” |
| Eoin | OH-in | Irish form of John, “God is gracious” |
| Pádraig | PAW-drig | Irish form of Patrick, “nobleman” |
| Seán | SHAWN | Irish form of John, via Norman French Jean |
| Diarmuid | DEER-mid | Possibly “without envy” |
| Fionn | FYUN or FIN | Fair, white, bright |
| Cathal | KA-hal | Battle ruler |
| Ronan | ROH-nan | Little seal |
| Tiernan | TEER-nan | Little lord |
| Ardal | AR-dal | High valor |
| Colm | KUL-um | Dove |
| Lorcan | LOR-kan | Little fierce one |
| Senan | SHEN-an | Little old one, wise one |
| Fiachra | FEE-uh-kra | Possibly “raven”; a 7th-century saint |
| Odhrán | OH-rawn | Little pale-green one |
Scottish Gaelic boy names
Many classic Scottish names began as Gaelic words or clan surnames. For hundreds more, see our Scottish boy names and Scottish last names.
| Name | Meaning | Note |
|---|---|---|
| Alasdair | Gaelic form of Alexander, “defender of men” | Anglicized as Alistair |
| Callum | From Latin columba, “dove” | Honors St. Columba of Iona |
| Ewan | Possibly “born of the yew” | Gaelic Eòghann |
| Hamish | Gaelic form of James (Seumas) | “Supplanter” |
| Angus | “One choice” (Aonghas) | A county and a Celtic god of love |
| Lachlan | “From the land of lochs,” i.e., Norway | Huge in Australia too |
| Murdo | “Sea warrior” (Murchadh) | Common in the Hebrides |
| Iain | Gaelic form of John | Pronounced EE-an |
| Duncan | “Brown-haired chief” (Donnchadh) | King of Scots, immortalized by Shakespeare |
| Kenneth | From Coinneach, “handsome” | Kenneth MacAlpin united the Picts and Scots |
| Malcolm | “Devotee of St. Columba” | Four medieval Scottish kings |
| Blair | “Plain, field” | Also used for girls |
| Ross | “Headland, promontory” | A Highland region |
| Struan | “Stream” | Rare and outdoorsy |
| Craig | “Rock, crag” | A 20th-century favorite |
| Dougal | “Dark stranger” | Originally a nickname for Danish Vikings |
| Fergus | “Man of vigor” | A legendary king of Dál Riata |
| Tavish | Gaelic form of Thomas (Tàmhas), “twin” | Surname-style |
| Cameron | “Crooked nose” | Clan name turned first name |
| Campbell | “Crooked mouth” | Another nickname-turned-clan name |
Welsh boy names
Welsh uses dd for the “th” in this, a single f for “v,” and the famous ll — a breathy “hl.” Our full Welsh boy names list has even more.
| Name | Pronunciation | Meaning |
|---|---|---|
| Rhys | REES | Ardor, enthusiasm |
| Dylan | DUL-an | Great tide; a sea-god in the Mabinogion |
| Geraint | GER-aint | From Latin Gerontius, “old man” |
| Gareth | GARE-eth | Possibly “gentle”; a knight of the Round Table |
| Emrys | EM-riss | Welsh form of Ambrosius, “immortal” |
| Idris | ID-riss | Ardent lord |
| Gethin | GETH-in | Dark, swarthy |
| Iestyn | YES-tin | Welsh form of Justin, “just” |
| Dafydd | DAH-vith | Welsh form of David, “beloved” |
| Llewelyn | hleh-WEL-in | Possibly “leader”; linked to llew, “lion” |
| Bryn | BRIN | Hill |
| Taliesin | tal-YES-in | Shining brow; a 6th-century bard |
| Cadoc | KAD-ok | Battle; a Welsh saint |
| Aneurin | a-NYE-rin | Possibly from Latin Honorius, “honor” |
| Gwilym | GWIL-im | Welsh form of William, “resolute protector” |
| Macsen | MAK-sen | Welsh form of Maximus, “greatest” |
| Morgan | MOR-gan | Possibly “sea circle” or “sea-born” |
| Evan | EV-an | Welsh form of John (Ieuan) |
| Owen | OH-en | Possibly “well-born” (Owain) |
| Deiniol | DINE-yol | Welsh form of Daniel, “God is my judge” |
Breton, Cornish and Manx boy names
The three smaller Celtic nations have names you’ll almost never hear on an American playground — which is exactly their appeal.
| Name | Meaning | Where from |
|---|---|---|
| Tristan | Possibly from Pictish Drust, “tumult” | Breton and Cornish legend |
| Yann | Breton form of John | Brittany |
| Loïc | Breton form of Louis, “famous warrior” | Brittany |
| Erwan | Breton form of Yves, “yew” | Brittany |
| Gwenaël | Gwenn “white, blessed” + hael “generous” | Brittany |
| Maël | “Prince, chief” | Brittany; top-10 in France recently |
| Jago | Cornish form of James | Cornwall |
| Piran | Patron saint of Cornwall and of tin miners | Cornwall |
| Petroc | Cornish form of Peter, “rock” | Cornwall |
| Illiam | Manx form of William | Isle of Man |
| Juan | Manx form of John (JOO-an), not the Spanish name | Isle of Man |
| Fynlo | Manx form of Finlay, “fair warrior” | Isle of Man |
| Orry | After King Orry, legendary Norse-Gaelic ruler of Man | Isle of Man |
Celtic boy names from myth and legend
Irish sagas and the Welsh Mabinogion are full of hero names that still work today. Pair them with our mythology boy names or druid names if you love this vibe.
| Name | Who he was | Meaning |
|---|---|---|
| Lugh | Irish god of skill and craft; gives his name to Lughnasadh | Possibly “light” or “oath” |
| Setanta | Boyhood name of the hero Cú Chulainn | Possibly from a British tribe name |
| Bran | Bran the Blessed, giant king of the Mabinogion | Raven |
| Dagda | Father-god of the Tuatha Dé Danann | The good god |
| Oscar | Warrior grandson of Fionn mac Cumhaill | Possibly “deer lover” |
| Conchobar | King of Ulster in the Ulster Cycle | Lover of hounds |
| Arthur | The legendary king of the Britons | Possibly from artos, “bear” |
| Merlin | Arthur’s wizard, Welsh Myrddin | From Moridunum, “sea fort” |
| Lir | Irish sea god, father of the Children of Lir | Sea |
| Manannán | Sea god who gave his name to the Isle of Man | Of Mann |
| Nuada | Silver-handed king of the Tuatha Dé Danann | Possibly “catcher” |
| Cormac | Cormac mac Airt, High King of Ireland | Possibly “charioteer” |
| Niall | Niall of the Nine Hostages, ancestor of the O’Neills | Possibly “champion” or “cloud” |
| Brian | Brian Boru, High King who defeated the Vikings at Clontarf | Possibly “high, noble” |
Popular Celtic boy names in the US
These anglicized Celtic names are easy to spell and already familiar to American ears — several sit in the national top 100.
| Name | Meaning | Origin |
|---|---|---|
| Liam | Short for Uilliam, “resolute protector” | Irish |
| Aidan | Little fire (Aodhán) | Irish |
| Connor | Anglicized Conchobar, “lover of hounds” | Irish |
| Kieran | Little dark one (Ciarán) | Irish |
| Declan | Possibly “full of goodness”; a 5th-century saint | Irish |
| Rory | Red king (Ruairí) | Irish |
| Nolan | Descendant of Nuallán, possibly “famous” | Irish |
| Keegan | Son of Aodhagán, “little fire” | Irish |
| Brendan | Possibly “prince”; the navigator saint | Irish |
| Logan | Little hollow | Scottish |
| Kevin | Gentle birth (Caoimhín) | Irish |
| Desmond | Man from South Munster | Irish |
| Quinn | Descendant of Conn, “chief” | Irish |
| Finlay | Fair warrior (Fionnlagh) | Scottish |
How to choose a Celtic name for your son
- Decide how authentic you want to be. Oisín and Ruairí honor the original Irish spelling; Rory and Aidan are the easy-to-spell American equivalents.
- Practice the pronunciation out loud. If you choose Tadhg or Dafydd, expect to spell it and explain it — decide whether that’s charming or tiring for your family.
- Match your heritage. A Welsh grandmother might love Emrys or Rhys; Scottish roots point to Lachlan or Hamish. Our Irish last names list can help you spot family surnames worth reusing.
- Check the meaning in context. Some names carry old nicknames — Cameron is “crooked nose” — which most people find fun, but it’s worth knowing.
- Use a Celtic middle name. If a hard spelling feels like too much for a first name, tuck it into the middle slot: James Oisín, Henry Lorcan.
Frequently asked questions
What is the most popular Celtic boy name?
Liam, a short form of the Irish Uilliam, has been one of the most popular boy names in the US for years (SSA data). Aidan, Connor, Owen and Logan are other Celtic-rooted favorites.
What is a strong Celtic name for a boy?
Cathal (“battle ruler”), Fearghal (“man of valor”), Murdo (“sea warrior”) and Lorcan (“little fierce one”) all carry powerful meanings.
Is Celtic the same as Irish?
No. Irish is one of six Celtic languages. Scottish Gaelic, Manx, Welsh, Breton and Cornish are the others, so Celtic names come from Scotland, Wales, Brittany, Cornwall and the Isle of Man as well as Ireland.
How do you pronounce Oisín?
Oisín is pronounced “uh-SHEEN” (or “OSH-een” in some regions). It means “little deer” and belongs to the poet-warrior son of Fionn mac Cumhaill.
What Celtic boy names mean warrior?
Finlay and Fynlo mean “fair warrior,” Murdo means “sea warrior,” and Cathal means “battle ruler.” See our names that mean warrior for more.