| Jakob | Jacob James |
| Jakobus | James |
| Jakobite | Jacobite |
| Jakobitin | Jacobite |
| Jakobsweg | Way of St James |
| Jak | yak |
| Jakobsstab | Orion's Belt bourdon Jacob’s staff |
| Jakute | Yakut |
| Dakota | Dakota |
| Zakone | Tsakonian |
| Diakon | deacon |
| Flakon | flacon vial |
| Guajaköl | guaiac oil |
| Jakarta | Jakarta |
| Jakobskirche | St James's Church |
| Jakobsleiter | Jacob's Ladder rope ladder Jacob's ladder |
| Jakutsk | Yakutsk |
| Kajak | kayak |
| Pinakol | pinacol |
| Takonit | taconite |