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Kai as a Baby Name. Meaning and Origin of Kai

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The baby name Kai is a Unisex name , 1 syllables long and is pronounced kye (IPA: /kaɪ/).

Kai is Chinese, Cornish, Hawaiian, Japanese, Scandinavian, Welsh in Origin.

Gender: Unisex
Syllables: 1.0
Origin: Chinese, Cornish, Hawaiian, Japanese, Scandinavian, Welsh
Pronunciation: kye (IPA: /kaɪ/)

What is the meaning of the name Kai ?

The baby name Kai is a Unisex name , 1 syllables long and is pronounced kye (IPA: /kaɪ/).

Kai is Chinese, Cornish, Hawaiian, Japanese, Scandinavian, Welsh in Origin.

Kai is a compact, multicultural given name with several independent roots and meanings. In Hawaiian, kai means “sea,” giving the name a strong nature association. In Japanese, Kai can be written with various kanji, most commonly 海 “ocean,” but also 甲斐 “worth/benefit” or 快 “cheerful,” so the sense varies by characters. In Chinese, the pinyin Kai appears in names such as 凯/恺 “triumphant, harmonious” and 开 “open; begin.” Northern European use stems from Frisian and Low German traditions, where Kai functions as a standalone masculine name.

Attested across Scandinavia and the German‑speaking world, the name spread widely in the late 20th century and is now popular in Britain and the United States as a unisex choice. Variants and cognates include Cai (the Welsh form linked to Arthurian Sir Kay), Kaj (Scandinavian), Kay, and Kye. Its cross‑linguistic brevity and oceanic imagery drive contemporary appeal.

Kai has the following similar or variant Names

Famous people with the name Kai

Chiang Kai-shek Politician · Born 1887 · Taiwan Chiang Kai-shek was a prominent Chinese political and military leader who played a key role in the history of Taiwan and China. He is most famous for leading the Republic of China during the Chinese Civil War and later establishing a government in Taiwan after retreating from mainland China in 1949. Kai Actor · Born 1994 · South Korea Kai is a given name that may refer to many different people, characters, and uses. It is commonly used across several cultures and can also appear in titles, fictional works, and other names. Kai Hahto Musician · Born 1973 · Finland Kai Hahto is best known as the drummer for the bands Wintersun and Nightwish. He’s a Finnish musician, born on 31 December 1973, and is associated with well-known songs like "Nemo," "Ghost Love Score," and "The Way of the Fire."
Kai Greene Athlete · Born 1975 · United States Kai Greene is best known as a professional bodybuilder, celebrated for his incredible leg development and artistic posing routines. Also known as "The Predator" and "The People's Champ," he is an American bodybuilder, actor, and artist born on July 12, 1975. Katlego Kai Kolanyane-Kesupile Musician · Born 1988 · Botswana Kai Kolanyane-Kesupile is a Botswana performance artist, musician, writer, and LGBT activist, best known as the first public figure in Botswana to openly identify as transgender. Also known as Kat Kai Kol-Kes, she was born in January 1988 and is recognized for her work in the arts and advocacy.

Celebrity babies named Kai

Name Last Name(s) Mother Mother famous for Fame Level Father Father famous for Fame Level
Kai Rooney Wayne Rooney association footballer ★★★★★
Kai Schreiber Naomi Watts television actor ★★★★★ Liev Schreiber film director ★★★★★
Kai Trump Donald Trump Jr. television presenter ★★★★★

Kai – Popularity by country

Based on birth registration data from national statistics agencies.

Country Gender Year Rank Born of
Ireland Boys 2025 #1 — 836
Germany Boys 2025 #1 — 423
FJ 0 #4 3 374
KH Girls 0 #6 1 148
FJ Girls 0 #9 1 583
KH Boys 0 #9 1 270
FJ Boys 0 #15 3 603
BW 0 #19 1 960
EE 0 #27 11 1,051
BN 0 #30 3 2,297
NA 0 #30 4 2,537
MV Girls 0 #35 1 2,021
MT 0 #43 1 1,767
GE 0 #44 1 997
MO 0 #47 6 2,706
Canada Boys 2024 #51 468 2,588
Germany Boys 0 #58 10,632 5,697
CN 0 #64 22 3,857
LU 0 #66 1 2,830
TW 0 #70 31 4,523
JP 0 #72 6 4,057
United States Boys 2024 #75 4,276 7,044
AO 0 #77 1 2,729
MV Boys 0 #77 3 3,375
SI 0 #79 2 1,612
PH 0 #80 17 5,607
Finland Boys 0 #81 1,436 2,041
TW Boys 0 #81 249 7,111
Switzerland Boys 2024 #84 54 1,769
Finland Boys 2026 #84 7,628 3,552
EE Girls 0 #85 56 1,888
JM 0 #89 5 3,714
CN Boys 0 #91 359 9,639
AF Girls 0 #94 1 2,402
KZ 0 #94 1 1,452
BN Boys 0 #99 35 6,332
ID Girls 0 #102 1 3,319
SD 0 #102 1 2,130
QA 0 #103 4 7,011
Germany 0 #105 622 2,542
BN Girls 0 #110 5 5,459
GE Boys 0 #110 1 2,055
OM 0 #119 3 6,215
Norway Boys 2025 #121 14 444
EE Boys 0 #121 5 2,087
KW 0 #121 1 5,216
CY Girls 0 #124 2 3,755
MO Boys 0 #129 98 5,842
AZ Boys 0 #131 1 1,400
IQ 0 #132 2 3,533
GR 0 #135 1 3,911
ID Boys 0 #135 1 4,130
SG 0 #144 132 11,010
LT Boys 0 #150 2 2,166
Belgium Boys 2024 #153 36 401
Sweden Boys 2022 #154 29 1,509
BW Boys 0 #154 1 4,685
JP Boys 0 #157 153 7,909
CR 0 #163 3 5,526
Finland 0 #166 174 830
MT Boys 0 #166 11 4,064
HK Boys 0 #167 833 12,905
HU Boys 0 #169 6 3,954
SI Girls 0 #177 1 2,769
Sweden Girls 2021 #182 2 1,666
AE 0 #182 6 10,220
MO Girls 0 #184 68 7,056
LU Boys 0 #185 34 4,970
CZ 0 #186 1 3,154
DK 0 #188 16 5,198
LU Girls 0 #189 2 4,850
AR 0 #192 2 2,915
RU 0 #194 1 3,641
Austria 0 #200 14 850
MY 0 #202 135 12,352
SI Boys 0 #208 4 3,402
AO Girls 0 #216 2 4,575
BG Boys 0 #216 5 3,850
NA Boys 0 #220 16 6,830
SG Boys 0 #220 752 17,960
PS 0 #225 2 5,692
AL Girls 0 #227 1 4,141
IR 0 #228 4 4,221
BG Girls 0 #231 1 3,559
JP Girls 0 #233 13 6,592
NA Girls 0 #234 4 7,146
DK Boys 0 #235 91 7,401
BD 0 #241 1 5,992
EC Boys 0 #246 1 3,322
GH 0 #247 2 5,396
AO Boys 0 #248 2 5,568
TW Girls 0 #249 28 8,139
JM Girls 0 #250 10 7,507
PT 0 #250 1 4,161
KZ Boys 0 #256 34 6,578
HR Boys 0 #257 3 3,997
Canada Girls 2024 #272 14 2,795
AF Boys 0 #272 3 3,535
IL 0 #280 3 6,291
MY Boys 0 #282 1,579 25,439
Austria Boys 0 #286 163 2,180
JM Boys 0 #286 8 6,876
HK 0 #292 57 8,483
PH Girls 0 #301 91 13,098
AL Boys 0 #303 1 5,122
CZ Boys 0 #303 3 6,530
QA Girls 0 #306 11 15,378
SA 0 #310 3 10,560
SG Girls 0 #316 292 18,916
DK Girls 0 #325 5 7,429
PE 0 #325 5 6,350
CN Girls 0 #327 23 8,829
GH Girls 0 #330 8 6,973
KZ Girls 0 #330 3 5,862
PL Boys 0 #333 8 6,459
JO Girls 0 #337 3 7,570
GT 0 #338 1 5,948
MU Boys 0 #338 20 8,477
PH Boys 0 #339 45 11,440
NL 0 #348 44 2,481
CZ Girls 0 #351 1 5,378
PT Boys 0 #356 12 7,951
SD Girls 0 #356 3 7,678
BR 0 #359 2 5,969
GH Boys 0 #359 3 8,138
MU Girls 0 #362 1 8,539
PL Girls 0 #364 1 5,096
France Boys 2021 #376 12 2,865
Finland Girls 0 #377 15 1,368
JO Boys 0 #386 4 7,057
YE 0 #393 6 8,639
SD Boys 0 #398 48 10,523
BD Girls 0 #405 2 8,413
BO 0 #406 3 6,868
EG 0 #412 1 6,387
UY Boys 0 #412 2 5,922
OM Girls 0 #418 7 15,987
CL 0 #429 6 6,867
NL Boys 0 #437 703 5,873
HK Girls 0 #438 181 16,104
ZA 0 #438 10 14,421
Spain 0 #442 11 2,326
MX 0 #443 3 8,339
RU Boys 0 #455 51 12,621
CR Boys 0 #458 30 10,188
PA Boys 0 #468 14 9,305
AR Boys 0 #476 8 7,628
MY Girls 0 #482 624 24,821
RU Girls 0 #482 17 11,913
GT Boys 0 #496 4 7,625
KW Girls 0 #502 14 19,177
PA Girls 0 #517 2 9,861
IQ Girls 0 #518 8 11,303
PS Boys 0 #518 31 10,655
AE Girls 0 #532 22 20,968
BH 0 #534 20 17,937
UY Girls 0 #536 1 6,731
CM Boys 0 #539 12 12,054
GT Girls 0 #539 3 7,500
PS Girls 0 #541 7 10,981
IR Boys 0 #543 10 10,162
LY 0 #554 6 12,703
CM Girls 0 #555 6 11,671
BD Boys 0 #563 14 10,045
IL Boys 0 #565 43 10,983
CR Girls 0 #566 8 11,342
BO Boys 0 #577 16 9,244
IL Girls 0 #598 20 11,648
CL Boys 0 #614 52 13,390
AR Girls 0 #628 3 8,289
IQ Boys 0 #633 35 13,071
LB 0 #646 13 13,263
IN Girls 0 #648 7 13,121
BO Girls 0 #650 2 9,488
QA Boys 0 #689 19 18,093
Finland Girls 2026 #694 45 3,895
IT 0 #701 14 4,183
United States Girls 2024 #704 213 8,487
SY 0 #719 10 11,684
BR Boys 0 #732 20 12,213
KW Boys 0 #754 16 18,755
Germany Girls 0 #773 66 4,949
TN 0 #786 44 13,765
Spain Boys 0 #794 137 5,610
NG Girls 0 #819 8 15,093
EG Boys 0 #831 56 15,035
CL Girls 0 #834 18 14,098
PE Boys 0 #849 30 14,506
SA Girls 0 #867 69 25,931
OM Boys 0 #870 12 17,948
CO Boys 0 #907 14 15,656
NL Girls 0 #914 42 5,933
PE Girls 0 #930 14 14,861
NG Boys 0 #939 13 16,906
EG Girls 0 #940 20 14,742
MX Boys 0 #952 31 16,355
Spain Girls 0 #959 25 5,561
IN Boys 0 #979 23 16,750
BR Girls 0 #987 6 12,708
ZA Boys 0 #1,025 154 25,619
AE Boys 0 #1,052 41 22,615
CO Girls 0 #1,066 13 16,140
MA 0 #1,070 59 20,986
DZ 0 #1,095 82 20,130
ZA Girls 0 #1,116 26 25,928
MX Girls 0 #1,171 13 17,781
TR 0 #1,173 39 19,440
IT Boys 0 #1,244 228 10,046
IT Girls 0 #1,403 44 9,415
SA Boys 0 #1,523 92 28,008

Kai is popular in 90 countries — most recent births per country:

Norway
Scotland, United Kingdom
Canada
Ireland
Switzerland

Did we miss something about this name? Let us know!

People also ask about Kai

Kai is a unisex name, given to both boys and girls.
Kai is a one syllable name, pronounced kye (IPA: /kaɪ/).
Common nicknames and spelling variations include Cai, Kye, Kay, Kaj and Khai.
Across languages, Kai has these equivalents: Dylan (Welsh, 'son of the sea'), Maren (Latin, 'of the sea'), Nika (Greek, 'victory'), Victor/Victoria (Latin, 'conqueror'), Cai (Welsh/Cornish historical form).
Yes, very popular — Kai ranked #1 in Ireland in 2025, and appears in official birth registries across 12 countries.
Kai ranks highest in Ireland (#1 in 2025).
Yes — 5 notable people named Kai are in our database, including Chiang Kai-shek (Politician), Kai (Actor), Kai Hahto (Musician).
Yes — at least 3 celebrity couples have chosen Kai for their child, including Wayne Rooney.