| # | Name | Origin | Meaning | Gender | Save |
|---|---|---|---|---|---|
| 1381 | Jerry | Greek | Diminutive of Jerome: Holy name. Sacred name. | M | |
| 1382 | Jerzyr | Greek | Farmer. | M | |
| 1383 | Jiri | Greek | Farmer. | M | |
| 1384 | Jirkar | Greek | Farmer. | M | |
| 1385 | Jocasta | Greek | Shining moon. Jocasta was the mother and wife of Oedipus; once Oedipus and Jocasta learned that their marriage was incestuous, Oedipus blinded himself and Jocasta committed suicide. | F | |
| 1386 | Jorenr | Greek | Farmer. | M | |
| 1387 | Jorgenr | Greek | Farmer. | M | |
| 1388 | Jorgr | Greek | Farmer. | M | |
| 1389 | Jorisr | Greek | Farmer. | M | |
| 1390 | Jornr | Greek | Farmer. | M | |
| 1391 | Judas | Greek | Greek form of Judah. The apostle, Judas Iscariot, betrayed Jesus Christ for thirty pieces of silver. As a result, the name Judas is used as a synonym for 'traitor' and is not often used as a first name. | M | |
| 1392 | Jules | Greek | Variant of Julius: Downy. Hairy. Derived from the clan name of Roman dictator Gaius Julius Caesar. | M | |
| 1393 | Julia | Greek | Feminine form of Julius: Downy. Hairy. Derived from the clan name of Roman dictator Gaius Julius Caesar. | F | |
| 1394 | Julian | Greek | Youthlul. | M | |
| 1395 | Julius | Greek | Downy. Hairy. Derived from the clan name of Roman dictator Gaius Julius Caesar. | M | |
| 1396 | Juliusr | Greek | Youthlul. | M | |
| 1397 | Jurgisr | Greek | Farmer. | M | |
| 1398 | Kadmus | Greek | From the east. | M | |
| 1399 | Kaethe | Greek | Pure. | F | |
| 1400 | Kaia | Greek | From the earth. | F | |