Girl Name · Irish Origin
Casie
Casie is a girl baby name of Irish origin, meaning "Alert, watchful". It currently sits in the Rare tier of US baby names for 2026, and parents who love Casie often also consider Cassie.
Casie meaning, origin, and usage
Meaning: Alert, watchful
Origin: Irish naming roots help connect Casie to related Irish baby names.
Pronunciation: Baby Name Studio pronounces Casie as C·A·S·I·E, with 5 letters and a girl usage profile.
Popularity: According to Baby Name Studio's 2026 tracker, Casie is an uncommon, standout choice in the Rare tier.
Casie variants, nicknames, middle names, and sibling names
- Variants and spelling ideas: Casiea, Casiee, Casiey, Casi.
- Nicknames: Cas and C.
- Middle names: Pair Casie with a middle name that balances its substantial sound; start with the Casie middle name generator.
- Sibling names: Cassie, Casey, Chuckie, Cassi, Casi — full picks on the sibling names for Casie guide for a cohesive sibset.
- Similar names: Looking for names that sound like Casie? Browse our names like Casie 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 Casie
What does the name Casie mean?
Casie means "Alert, watchful" and is of Irish origin.
What is the origin of Casie?
Casie originates in Irish naming tradition.
How do you pronounce Casie?
Casie has 5 letters and is most commonly stressed on the first syllable.
Is Casie a boy's or girl's name?
Casie is primarily used as a girl's name in US records.
How popular is Casie in 2026?
In our 2026 popularity tracker, Casie sits in the Rare tier — an uncommon, standout choice.
What names are similar to Casie?
Names that share Casie's sound and style include Cassie, Casey, Chuckie, Cassi, Casi.
What middle names pair well with Casie?
Good middle-name fits for Casie pair an opposite syllable rhythm: if Casie is short, lean longer (e.g. classical or three-syllable middles); if Casie is longer, a one-syllable middle keeps the full name from feeling heavy.
What are good sibling names for Casie?
Sibling names that pair naturally with Casie share its rhythm without rhyming — Cassie, Casey, Chuckie all sit comfortably alongside it on a shortlist.