Boy Name · Greek Origin
Onyx
Considering Onyx? It is a boy name whose meaning is "Black gemstone", rooted in Greek naming tradition, and ranks in our Rare popularity tier. Phonetically it shares territory with Owens.
Onyx meaning, origin, and usage
Meaning: Black gemstone
Origin: Greek naming roots help connect Onyx to related Greek baby names.
Pronunciation: Baby Name Studio pronounces Onyx as O·N·Y·X, with 4 letters and a boy usage profile.
Popularity: According to Baby Name Studio's 2026 tracker, Onyx is an uncommon, standout choice in the Rare tier.
Onyx variants, nicknames, middle names, and sibling names
- Variants and spelling ideas: Onyxa, Onyxe, Onyxy.
- Nicknames: Onyx works as its own nickname.
- Middle names: Pair Onyx with a middle name that balances its short sound; start with the Onyx middle name generator.
- Sibling names: Owens, Omega, Onesimo, Oneal, Oneil — full picks on the sibling names for Onyx guide for a cohesive sibset.
- Similar names: Looking for names that sound like Onyx? Browse our names like Onyx 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 Onyx
What does the name Onyx mean?
Onyx means "Black gemstone" and is of Greek origin.
What is the origin of Onyx?
Onyx originates in Greek naming tradition.
How do you pronounce Onyx?
Onyx has 4 letters and is most commonly stressed on the first syllable.
Is Onyx a boy's or girl's name?
Onyx is primarily used as a boy's name in US records.
How popular is Onyx in 2026?
In our 2026 popularity tracker, Onyx sits in the Rare tier — an uncommon, standout choice.
What names are similar to Onyx?
Names that share Onyx's sound and style include Owens, Omega, Onesimo, Oneal, Oneil.
What middle names pair well with Onyx?
Good middle-name fits for Onyx pair an opposite syllable rhythm: if Onyx is short, lean longer (e.g. classical or three-syllable middles); if Onyx is longer, a one-syllable middle keeps the full name from feeling heavy.
What are good sibling names for Onyx?
Sibling names that pair naturally with Onyx share its rhythm without rhyming — Owens, Omega, Onesimo all sit comfortably alongside it on a shortlist.