| Meaning | war, strife, little church |
| Origin | Gaelic, Irish |
| Gender | Boy |
| Popularity | Moderate |
| Length | 7 |
| Syllables | 3 |
| Syllabification | Cil-li-an |
Cillian brings Irish charm and sophistication to the naming conversation, carrying centuries of Celtic tradition into contemporary contexts. The name gained significant international recognition through celebrated actors bearing it, demonstrating its transition from culturally specific to globally appreciated. Cillian's spelling presents an interesting challenge, with its unconventional appearance creating intrigue and requiring explanation. The pronunciation, however, flows beautifully once mastered, with its gentle sounds creating an appealing auditory experience. Parents choosing Cillian often appreciate European influences and Irish heritage, seeking names that honor those connections. The name works particularly well for families with Celtic backgrounds or those drawn to Irish culture and traditions. Cillian carries an artistic, creative energy, perhaps influenced by its notable bearers in entertainment and arts. The two-syllable structure maintains simplicity while the unique spelling adds complexity and interest. This combination creates a name that feels both accessible and distinctive. Cillian ages remarkably well, working equally effectively for young children and accomplished adults. The nickname possibilities, including Cill or Kil, provide options for casual contexts while the full name maintains formality when needed.
| Connor |
| Caleb |
| Christopher |
| Cameron |
| Charles |
| Calvin |
| Carter |
| Christian |
| Cody |
| Cole |
| Chase |
| Caden |
| Cill |
| Cil |
| Ian |
| Cilly |
| Cillian Murphy | Irish actor known for his roles in "Peaky Blinders" and "Inception" |
| Cillian O'Connor | Irish Gaelic footballer |
| Cillian Vallely | Irish musician and uilleann piper |
| Cillian Buckley | Irish hurler |
| Cillian Willis | Irish singer-songwriter and guitarist |
| Cillian Sheridan | Irish writer and director |
| Cillian Lordan | Irish musician |
| Cillian Ryan | Irish cricketer |
| Cillian Byrne | Irish rugby player |
| Cillian Duffy | Irish footballer |
| Cillian Kiely | Irish composer |
| Cillian O'Hanlon | Irish footballer |
| Cillian McDaid | Irish footballer |
| Cillian Whelan | Irish footballer |
| Cillian Fahy | Irish fiddler |
| Cillian Davis | Protagonist in the novel "Cillian's Journey" |
| Cillian Blackthorn | Wizard character in the fantasy book series "The Chronicles of Cillian" |
| Cillian Hart | Detective in the crime fiction series "The Cillian Hart Mysteries" |
| Cillian Finnegan | Space explorer in the science fiction novel "Cillian's Odyssey" |
| Cillian Woods | Main character in the adventure novel "Cillian and the Lost Treasure" |
| Cillian Gallagher | Heroic figure in the fantasy role-playing game "The Legend of Cillian" |
| Cillian Stone | Secret agent in the spy thriller "The Cillian Code" |
| Cillian Riley | Time-traveling scientist in the science fiction film "Cillian's Paradox" |
| Cillian Hayes | Magical apprentice in the fantasy series "The Cillian Chronicles" |
| Cillian Foster | Young prodigy in the coming-of-age novel "Cillian's Dream" |
| Cillian Brooks | Vampire protagonist in the paranormal romance "Cillian's Embrace" |
| Cillian Hartigan | Genius inventor in the steampunk novel "The Cillian Contraption" |
| Cillian MacLeod | Scottish warrior in the historical fiction "The Braveheart of Cillian" |
| Cillian Frost | Ghost hunter in the supernatural thriller "The Cillian Files" |
| Cillian Ashford | Rebel leader in the dystopian novel "The Cillian Rebellion" |
| Cillian Steele | Pirate captain in the swashbuckling adventure "Cillian's Legacy" |
| Cillian Talbot | Time-traveling knight in the historical fantasy "Cillian's Quest" |
| Cillian Storm | Superhero character in the comic book series "The Adventures of Cillian" |
| Cillian Westwood | Detective inspector in the crime novel "The Cillian Murders" |
| Cillian Swift | Talking animal protagonist in the children's book "The Adventures of Cillian and Friends" |