| Jorah | Both | Hebrew | Rainy | |
| Joram | Boy | Hebrew | Same as Jehoram; God Raised, Jehovah is High | |
| Joshua | Boy | Hebrew | God saves | |
| Jude | Boy | Hebrew | Celebrated | |
| Julia | Girl | Latin | Fem. of Julius; Downy; Word of Latin origin | |
| Junias | Both | Latin | Adolescent(?) | |
| Justus | Boy | Latin | Just | |
| Kallai | Both | Hebrew | Lighthearted | |
| Kareah | Both | Hebrew | Bald | |
| Kedar | Boy | Hebrew | Dusky | |
| Kedemah | Both | Hebrew | Precedence | |
| Keilah | Both | Uncertain | Sling(?), Stronghold(?); Uncertain meaning | |
| Kelaiah | Both | Hebrew | Insignificance | |
| Kohath | Boy | Hebrew | Allied, Assembly | |
| Kolaiah | Boy | Hebrew | Voice of God | |
| Laadah | Boy | Uncertain | Uncertain Meaning; Order (?) | |
| Laadan | Boy | Hebrew | Uncertain Meaning; Put in order (?) | |
| Laban | Boy | Hebrew | White | |
| Lael | Boy | Hebrew | Belonging to God, (devoted) to God | |
| Laish | Boy | Hebrew | Lion | |
| Lamech | Boy | Hebrew | Uncertain Meaning; Destroyer (?) | |
| Lazarus | Boy | Greek | Greek for Eleazar [God helped] | |
| Leah | Girl | Hebrew | Weary, Languid, Delicate | |
| Lehabim | Boy | Hebrew | Flames | |
| Lemuel | Boy | Hebrew | Belonging to God, (devoted) to God (?) | |