What does Kaj mean and where does it come from?
Kaj is a Scandinavian name that is often associated with purity. It is believed to have roots in Old Norse, where the meaning relates to 'to hold' or 'to keep'. It became popular across Denmark, Norway, and Sweden, especially in the 20th century. Notable figures with this name include Kaj Munk, a Da
Cultural significance
Kaj has been a cherished name across cultures, particularly in Denmark-speaking communities, where it reflects values of pure.
Peak popularity
Reached #3552 in 1969 — currently #12947 in the US.
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Related Reading
Denmark-origin baby names with timeless appeal
Browse names →How else can you spell Kaj?
Same sound, different look — useful if you want something slightly more distinctive
What middle names flow best with Kaj?
Kaj works best with short, strong middle names — one or two syllables keep the full name from becoming a mouthful
Kaj Jack
One syllable · timeless choice
Kaj John
One syllable · timeless choice
Kaj Luke
One syllable · timeless choice
Kaj Miles
One syllable · vintage charm
Kaj Beau
One syllable · on the rise
Kaj Brooks
One syllable · timeless choice
How popular is Kaj right now?
Falling — down 6914 spots — currently #12947 in the US out of 135.5k tracked names
| Year | US Rank | Births | vs Prior Year |
|---|
| 2025 | #12947 | 5 | ▼ down 6914 · -67% births |
| 2024 | #6033 | 15 | ▲ up 3303 · +88% births |
| 2023 | #9336 | 8 | ▲ up 2231 · +33% births |
| 2022 | #11567 | 6 | ▼ down 3708 · -40% births |
| 2021 | #7859 | 10 | ▲ up 951 · +25% births |
| 2020 | #8810 | 8 | ▼ down 3017 · -47% births |
| 2015 | #5793 | 15 | ▼ down 249 · -6% births |
| 2010 | #5544 | 16 | ▲ up 1688 · +60% births |
| 2005 | #7232 | 10 | ▼ down 2363 · -33% births |
| 2000 | #4869 | 15 | ▲ up 2364 · +114% births |
| 1995 | #7233 | 7 | ▼ down 1186 · -12% births |
| 1990 | #6047 | 8 | ▲ up 31 · +33% births |
| 1985 | #6078 | 6 | ▼ down 913 |
| 1975 | #5165 | 6 | — |
The story of Kaj
Kaj is a relatively modern name, first appearing in US records in 1961. With 464 total births recorded, Kaj remains relatively uncommon. Once ranked #5165 in 1975, the name has become less common in recent years, sitting at #9336 in 2023.
Names that peaked alongside Kaj in 1969:
Kaj by decade
Kaj peaked in the 1960s. See all 1960s names →
| Decade | Births | |
|---|
| 1960s | 30 | |
| 1970s | 26 | |
| 1980s | 54 | |
| 1990s | 74 | |
| 2000s ★ | 140 | |
| 2010s | 132 | |
| 2020s | 28 | |
💎Kaj has only 464 total recorded births since 1961 — rarer than 99% of names in our database.
What are good nicknames for Kaj?
What names sound and feel like Kaj?
Based on sound, origin, and style — parents who love Kaj also consider these
Common questions about the name Kaj
What does the name Kaj mean?
Kaj means "pure" — a name rooted in Denmark tradition that carries both historical depth and timeless appeal. The meaning reflects values that have made this name endure across generations.
How popular is the name Kaj?
Kaj is currently a distinctive and less common name as a boy name in the US and is becoming rarer and more distinctive, making it a unique choice that stands out.
What is the cultural origin of Kaj?
Kaj originates from Denmark tradition. Denmark names tend to carry strong cultural heritage and have spread across the world through migration, literature, and religion over centuries.
How does Kaj sound with different last names?
As a one-syllable name, Kaj flows best with last names of two or three syllables. Avoid last names ending in the same sound as Kaj ends, as this can create an unwanted rhyme. Test by saying the full name out loud several times.
Is Kaj a common or rare name?
Kaj is a distinctive choice that balances familiarity with individuality. It strikes a balance between standing out and fitting in.