Boy Name · English Origin
Killian
Killian — a boy name from the English tradition — is an uncommon, standout choice. Its meaning, "Pure hearted", anchors the name in something deeper than sound alone. If Keelan is on your shortlist, Killian belongs in the same conversation.
Killian meaning, origin, and usage
Meaning: Pure hearted
Origin: English naming roots help connect Killian to related English baby names.
Pronunciation: Baby Name Studio pronounces Killian as K·I·L·L·I·A·N, with 7 letters and a boy usage profile.
Popularity: According to Baby Name Studio's 2026 tracker, Killian is an uncommon, standout choice in the Rare tier.
Killian variants, nicknames, middle names, and sibling names
- Variants and spelling ideas: Killiana, Killiane, Killiany, Killia.
- Nicknames: Kill and K.
- Middle names: Pair Killian with a middle name that balances its substantial sound; start with the Killian middle name generator.
- Sibling names: Keelan, Kellan, Kylan, Kaylan, Kylian — full picks on the sibling names for Killian guide for a cohesive sibset.
- Similar names: Looking for names that sound like Killian? Browse our names like Killian guide for phonetic-neighbor picks.
- Explore more: use the Baby Name Explorer, name search, AI name generator, and Baby Name Studio homepage.
Frequently asked about Killian
What does the name Killian mean?
Killian means "Pure hearted" and is of English origin.
What is the origin of Killian?
Killian originates in English naming tradition.
How do you pronounce Killian?
Killian has 7 letters and is most commonly stressed on the first syllable.
Is Killian a boy's or girl's name?
Killian is primarily used as a boy's name in US records.
How popular is Killian in 2026?
In our 2026 popularity tracker, Killian sits in the Rare tier — an uncommon, standout choice.
What names are similar to Killian?
Names that share Killian's sound and style include Keelan, Kellan, Kylan, Kaylan, Kylian.
What middle names pair well with Killian?
Good middle-name fits for Killian pair an opposite syllable rhythm: if Killian is short, lean longer (e.g. classical or three-syllable middles); if Killian is longer, a one-syllable middle keeps the full name from feeling heavy.
What are good sibling names for Killian?
Sibling names that pair naturally with Killian share its rhythm without rhyming — Keelan, Kellan, Kylan all sit comfortably alongside it on a shortlist.