What does Cillian mean?
Cillian — popularised by Cillian Murphy / Peaky Blinders — has surged on UK charts.
Origin
Religious / cultural tradition
Christian
Variations
Cillian · Killian
Nicknames
Cill
Sibling name ideas
More boy names like Cillian
Meanings + cultural notes are educational summaries reflecting common scholarly + linguistic interpretations. Spellings, meanings + pronunciations can vary by region + family tradition.