Kaja is a distinctive choice, ranked #1809 in 2025. Your child is likely to be the only Kaja in their class.
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UK Rank 2025
#1809
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About the Name Kaja
Kaja has seen a notable decline in recent years, dropping 714 places in five years. It was most popular in 2018 at #657 — parents choosing it today are making a deliberately counter-trend decision. The name has been a consistent presence in UK records since 1997.
Kaja is uncommon in the UK, so your child is very likely to be the only Kaja in their class.
⭐ Famous People Named Kaja
Kaja Kallas — Kaja Kallas is an Estonian politician and diplomat.
Kaja Foglio — Kaja Marie Foglio is a Seattle-based writer, artist, and publisher.
Kaja Rysz — Kaja Rysz is a Polish road cyclist, who currently rides for UCI Women's WorldTeam Roland Le Dévoluy.
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.
Frequently Asked Questions
Common questions about the name Kaja
Unlikely. With around 16 UK babies named Kaja per year, your child will almost certainly be the only Kaja in their class, and possibly the only one in the whole school.
Kaja is declining: down 1,074 places since 2020, to #1,809 in 2025. It peaked at #657 in 2018.
Kaja is a distinctive choice sitting outside the mainstream UK top names. Parents choosing less common names often find their children appreciate the individuality as they grow up, rarely needing to add an initial to distinguish themselves.
Notable people named Kaja include: Kaja Kallas, Kaja Foglio and Kaja Rysz. Short summaries for each appear below.
Kaja does not appear in the US top 1,000 baby names, making it a distinctively British choice — your child is unlikely to encounter American Kajas in the wild.
16
UK babies named Kaja (2025)
< 1
Expected classmates with this name (class of 28)
~0.0
In a school of 600
↓ 1074 places
Rank change (last 5 years)
🏫 Who else is in the room?
In a typical UK class of 28, highlighted children share the name Kaja
Almost certainly the only Kaja in the class
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UK Popularity (1997–2025)
Rank and birth count · ONS official data
No US data available for this name
✨ Similar names to Kaja
Names with a similar style — each with their own classroom story