| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 361 | Iver | Scottish | Archer. | M | |
| 362 | Jackie | Scottish | God has been gracious; has shown favor. Based on John or Jacques. | M | |
| 363 | Jackson | Scottish | God has been gracious; has shown favor. Based on John or Jacques. | M | |
| 364 | Jacky | Scottish | God has been gracious; has shown favor. Based on John or Jacques. | M | |
| 365 | Jaime | Scottish | Variant of Jacob Supplanter. | M | |
| 366 | Jamie | Scottish | Variant of Jacob 'Supplanter.'. | M | |
| 367 | Jamieson | Scottish | Variant of Jacob 'Supplanter.'. | M | |
| 368 | Janneth | Scottish | Variant of Jane; from the French Jeanette. | M | |
| 369 | Jock | Scottish | God is gracious. A diminutive of John and influenced by Jack. Today, Jock is commonly used as a nickname for someone who is heavily involved in sports and has been used in the past as a nickname for a Scot or as a slang term for a Scottish soldier. | M | |
| 370 | Johnson | Scottish | Son of John. | M | |
| 371 | Johnston | Scottish | From John's farm. | M | |
| 372 | Kade | Scottish | From the wetlands. | M | |
| 373 | Kai | Scottish | Fire. | M | |
| 374 | Kam | Scottish | Form of Cameron 'crooked nose.'. | M | |
| 375 | Kamden | Scottish | Winding Valley. Form of Camden. | M | |
| 376 | Kameron | Scottish | Form of Cameron 'crooked nose.'. | M | |
| 377 | Kamron | Scottish | Form of Cameron 'crooked nose.'. | M | |
| 378 | Kay | Scottish | Fire. | M | |
| 379 | Keeley | Scottish | Variant of Kelly: Wood. Surname and place name that has only been used as a first name (either gender) in the latter half of the 20th century. | M | |
| 380 | Keir | Scottish | A surname used occasionally as a first name since the late 19th century. | M | |