Boy Name
Keir
Keir means “Dark”. It is used as a boy's name across several naming traditions, and it is rare in the United States today — outside the SSA top 1,000.
Origin and meaning: English Wiktionary (CC BY-SA 4.0). Popularity: US Social Security Administration.
Keir — a boy name — is an uncommon, standout choice. Its meaning, "Dark", anchors the name in something deeper than sound alone. If Kera is on your shortlist, Keir belongs in the same conversation.
Keir meaning, origin, and usage
Meaning: Dark
Origin: Multiple naming traditions are associated with this name.
Pronunciation: Baby Name Studio pronounces Keir as K·E·I·R, with 4 letters and a boy usage profile.
Popularity: According to Baby Name Studio's 2026 tracker, Keir is an uncommon, standout choice in the Rare tier.
Keir variants, nicknames, middle names, and sibling names
- Variants and spelling ideas: Keira, Keire, Keiry.
- Nicknames: Keir works as its own nickname.
- Middle names: Pair Keir with a middle name that balances its short sound; start with the Keir middle name generator.
- Sibling names: Kera, Keary, Keara, Keri, Kerry — full picks on the sibling names for Keir guide for a cohesive sibset.
- Similar names: Looking for names that sound like Keir? Browse our names like Keir 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 Keir
What does the name Keir mean?
Keir means "Dark". The meaning is recorded in English Wiktionary (CC BY-SA 4.0), and in US records Keir is used as a boy name.
What is the origin of Keir?
The exact origin of Keir is debated, but it has been used across multiple naming traditions.
How do you pronounce Keir?
Keir has 4 letters and is most commonly stressed on the first syllable.
Is Keir a boy's or girl's name?
Keir is primarily used as a boy's name in US records.
How popular is Keir in 2026?
In our 2026 popularity tracker, Keir sits in the Rare tier — an uncommon, standout choice.
What names are similar to Keir?
Names that share Keir's sound and style include Kera, Keary, Keara, Keri, Kerry.
What middle names pair well with Keir?
Good middle-name fits for Keir pair an opposite syllable rhythm: if Keir is short, lean longer (e.g. classical or three-syllable middles); if Keir is longer, a one-syllable middle keeps the full name from feeling heavy.
What are good sibling names for Keir?
Sibling names that pair naturally with Keir share its rhythm without rhyming — Kera, Keary, Keara all sit comfortably alongside it on a shortlist.