Cillian is an Irish name that means young warrior or young soldier. The name Cillian is derived from the Gaelic word ceallach, which means bright-headed or war. Cillian is a popular name in Ireland and has been in use since ancient times. The name Cillian has been associated with several notable historical figures, including a 5th-century Irish king and a 12th-century Irish saint. Cillian is a variant of the name Killian, which is also of Irish origin and means little warrior. The name Cillian has gained popularity in recent years, particularly in Ireland and the United Kingdom. Cillian is a versatile name that can be used as a first name, middle name, or surname. The name Cillian has been used in various forms of media, such as in movies, TV shows, and literature. Cillian is a strong and masculine name that is often associated with courage, bravery, and leadership. The name Cillian has a unique and distinctive sound that sets it apart from other names.

The root form of Cillian is Cillian — meaning War strife or church.

Cillian remains a beloved choice, ranking #245 in the US. Timeless appeal across cultures and generations.