Girl Name
Cassi
Cassi is a girl's name whose meaning is not firmly attested in the historical record. It is used as a girl's name across several naming traditions, and it is rare in the United States today — outside the SSA top 1,000.
Considering Cassi? It is a girl name, and ranks in our Rare popularity tier. Phonetically it shares territory with Casi.
Cassi meaning, origin, and usage
Meaning: Cassi has a distinctive sound and evolving modern usage.
Origin: Multiple naming traditions are associated with this name.
Pronunciation: Baby Name Studio pronounces Cassi as C·A·S·S·I, with 5 letters and a girl usage profile.
Popularity: According to Baby Name Studio's 2026 tracker, Cassi is an uncommon, standout choice in the Rare tier.
Cassi variants, nicknames, middle names, and sibling names
- Variants and spelling ideas: Cassia, Cassie, Cassiy, Cass.
- Nicknames: Cas and C.
- Middle names: Pair Cassi with a middle name that balances its substantial sound; start with the Cassi middle name generator.
- Sibling names: Casi, Cassie, Cass, Casey, Casie — full picks on the sibling names for Cassi guide for a cohesive sibset.
- Similar names: Looking for names that sound like Cassi? Browse our names like Cassi 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 Cassi
What does the name Cassi mean?
Cassi has no single meaning that is firmly attested in the historical record. It is used as a girl name in US birth records, and parents usually choose it for its sound rather than a documented meaning.
What is the origin of Cassi?
The exact origin of Cassi is debated, but it has been used across multiple naming traditions.
How do you pronounce Cassi?
Cassi has 5 letters and is most commonly stressed on the first syllable.
Is Cassi a boy's or girl's name?
Cassi is primarily used as a girl's name in US records.
How popular is Cassi in 2026?
In our 2026 popularity tracker, Cassi sits in the Rare tier — an uncommon, standout choice.
What names are similar to Cassi?
Names that share Cassi's sound and style include Casi, Cassie, Cass, Casey, Casie.
What middle names pair well with Cassi?
Good middle-name fits for Cassi pair an opposite syllable rhythm: if Cassi is short, lean longer (e.g. classical or three-syllable middles); if Cassi is longer, a one-syllable middle keeps the full name from feeling heavy.
What are good sibling names for Cassi?
Sibling names that pair naturally with Cassi share its rhythm without rhyming — Casi, Cassie, Cass all sit comfortably alongside it on a shortlist.