Boy Names That Start With K

These are the 83 boy names that start with K, have reached the top 500 as a boy's name at some point since 1880, and still go to boys rather than girls today. Ranked by the number of boys given each name in 2025, most common first.

All 83 names

1. Kai #93 3,768
2. Kayden #135 2,678
3. Knox #196 1,836
4. Kingston #204 1,725
5. Kevin #221 1,628
6. Kairo #226 1,577
7. Kaiden #237 1,476
8. Kyrie #244 1,416
9. Kayson #264 1,305
10. Koa #269 1,281
11. Karter #270 1,265
12. Kash #286 1,183
13. Kenneth #294 1,148
14. Kaleb #295 1,143
15. Kohen #295 1,143
16. Kaden #328 1,034
17. Kade #348 943
18. Kaizen #364 895
19. Kyaire #367 878
20. Kayce #375 843
21. Khalil #384 826
22. Kieran #389 817
23. Kamari #391 811
24. Kashton #400 797
25. Kian #400 797
26. Kylo #400 797
27. Kyler #404 790
28. King #405 786
29. Koda #410 778
30. Kaysen #415 772
31. Killian #417 770
32. Kane #451 695
33. Karson #453 690
34. Kameron #466 663
35. Kyson #471 648
36. Kasen #483 622
37. Kyle #508 594
38. Kobe #518 578
39. Kendrick #535 559
40. Kaison #539 557
41. Kolton #594 489
42. Kason #597 480
43. Keegan #621 449
44. Kylian #622 448
45. Kareem #701 383
46. Kamden #717 375
47. Keaton #769 333
48. Keith #800 311
49. Kellan #1030 215
50. Kelvin #1034 214
51. Kellen #1069 202
52. Kody #1069 202
53. Kristian #1145 184
54. Kasey #1159 180
55. Kristopher #1188 172
56. Kolby #1222 165
57. Kendall #1231 163
58. Kenny #1267 155
59. Keenan #1305 149
60. Karl #1585 107
61. Keagan #1609 105
62. Kip #1621 104
63. Kent #1654 101
64. Kelly #1867 84
65. Kurt #2258 62
66. Kerry #2451 55
67. Kirk #2539 52
68. Korey #2718 47
69. Kurtis #2718 47
70. Kevon #2991 41
71. Kris #3181 37
72. Ken #3240 36
73. Kirby #3240 36
74. Kory #3314 35
75. Kristofer #3583 31
76. Kadin #3949 27
77. Kadeem #4249 24
78. Kristoffer #6803 12
79. Kay #7679 10
80. Kennith #10695 6
81. Kermit #10695 6
82. Kim #10695 6
83. Kanye #12008 5

Boy names that start with K in the 2025 data

K is the seventh most common first letter for boys born in 2025: 87,475 of them, 5.1% of every boy in the file. It has climbed from ninth place a decade ago, and its share has grown from 4.8% to 5.1%.

This list holds the 83 of those names that reached the top 500 as a boy's name at some point since 1880 and are still given to boys rather than girls. The most common today is Kai, #93 with 3,768 boys in 2025. 1 of the 83 are in this year's top 100, and 83 appear in the 2025 file at all — which takes at least five births, the point below which a name is left out. Together they account for 49,857 of those 87,475 boys — the remainder go to names that have never reached the top 500, each given to a handful of children.

The fastest climber among them is Kayce, up from #4,407 in 2015 to #375 in 2025. King has gone the other way, from #163 to #405. The shortest name here is Kai at 3 letters, the longest Kristopher at 10.

Questions about boy names that start with K

What is the most popular boy name that starts with K?

Kai. 3,768 boys were given the name in 2025, which put it at #93 nationally.

How many boy names start with K?

83 have reached the top 500 as a boy's name and still go to boys today, which is this list. Counting every spelling in the file, 87,475 boys born in 2025 — 5.1% of the total — were given a name starting with K.

Are boy names that start with K getting more popular?

K is gaining ground. It was ninth among first letters for boys a decade ago with 4.8% of births, and it is seventh in 2025 with 5.1%.