| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 501 | Janetta | Scottish | Variant of Jane; from the French Jeanette. | F | |
| 502 | Jannet | Scottish | Variant of Jane; from the French Jeanette. | F | |
| 503 | Janneth | Scottish | Variant of Jane; from the French Jeanette. | F | |
| 504 | Janneth | Scottish | Variant of Jane; from the French Jeanette. | M | |
| 505 | Jaymee | Scottish | Pet form of James used as a woman's name. | F | |
| 506 | Jaymie | Scottish | Pet form of James used as a woman's name. | F | |
| 507 | Jean | Scottish | Scottish version of the Old French Jehane, a feminine form of John: God is gracious. | F | |
| 508 | Jeanette | Scottish | Diminutive of Jean: Scottish version of the Old French Jehane, a feminine form of John: God is gracious. | F | |
| 509 | Jeanie | Scottish | Diminutive of Jean: Scottish version of the Old French Jehane, a feminine form of John: God is gracious. | F | |
| 510 | Jeanne | Scottish | Variant of Jean: Scottish version of the Old French Jehane, a feminine form of John: God is gracious. | F | |
| 511 | Jeannette | Scottish | Diminutive of Jean: Scottish version of the Old French Jehane, a feminine form of John: God is gracious. | F | |
| 512 | Jeannie | Scottish | Diminutive of Jean: Scottish version of the Old French Jehane, a feminine form of John: God is gracious. | F | |
| 513 | Jen | Scottish | Diminutive of Janet. God has been gracious. | F | |
| 514 | Jess | Scottish | Diminutive of Jessie: A diminutive of Janet. Also a diminutive of Jessamine or Jessical. | F | |
| 515 | Jessie | Scottish | A diminutive of Janet. Also a diminutive of Jessamine or Jessical. | F | |
| 516 | 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 | |
| 517 | Johnson | Scottish | Son of John. | M | |
| 518 | Johnston | Scottish | From John's farm. | M | |
| 519 | Kade | Scottish | From the wetlands. | M | |
| 520 | Kai | Scottish | Fire. | M | |