Will my child share the name Onyx with classmates?

Unlikely. With around 31 UK babies named Onyx per year, your child will almost certainly be the only Onyx in their class, and possibly the only one in the whole school.

Is Onyx becoming more or less popular in the UK?

Onyx is rising: up 849 places since 2020, to #976 in 2025. Its best recorded position was #843 in 2023.

Is Onyx popular in the US as well as the UK?

Onyx is more popular in the US (#358) than in the UK (#1000). Names with strong rankings in both countries tend to have broad cross-cultural appeal, working well for international families or those with ties to both nations.

Is Onyx a popular baby name in the United States?

Onyx appears in the US top 500 at #358 in 2024 — moderately popular in America, though less so than in the UK.

👦 Boy's name 💎 Relatively Unique UK #976

Onyx

🗳️ Add Onyx to a family shortlist

Onyx is a distinctive choice, ranked #976 in 2025. Your child is likely to be the only Onyx in their class.

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UK Rank 2025

#976

US Rank #365

About the Name Onyx

Onyx is currently at its most popular point on record, sitting at UK #1000. The name has climbed 825 places in the last five years — a significant surge by any measure. The name has been a regular feature in UK records since 2004.

Onyx is uncommon in the UK, so your child is very likely to be the only Onyx in their class.

In the US it ranks even higher at #358, where it enjoys a particularly strong following.

⭐ Famous People Named Onyx

Onyx Lorenzoni — Onyx Dornelles Lorenzoni is a Brazilian politician, businessman, and veterinarian.

Biographical summaries are shortened from Wikipedia and are used under the CC BY-SA 4.0 licence; those summaries remain available under that same licence.