| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Ja'i | city | State of Sarawak | Malaysia | 1.55 | 110.7166667 | 3 | 2580 |
| Jai | city | State of Sarawak | Malaysia | 4.6166667 | 114.9 | 324 | 3886 |
| Jaie | city | State of Sarawak | Malaysia | 1.55 | 110.7166667 | 3 | 2580 |
| Jakar | city | State of Sarawak | Malaysia | 2.05 | 111.5 | 55 | 5930 |
| Jambu | city | State of Sarawak | Malaysia | 1.5666667 | 111.7333333 | 1469 | 3784 |
| Jambusan | city | State of Sarawak | Malaysia | 1.4166667 | 110.1833333 | 321 | 10498 |
| Jamit | city | State of Sarawak | Malaysia | 1.8333333 | 111.9166667 | 311 | 1475 |
| Jangkang | city | State of Sarawak | Malaysia | 1.1 | 111.5 | 344 | 3588 |
| Jangkar | city | State of Sarawak | Malaysia | 1.65 | 109.7666667 | 39 | 2455 |
| Jangkar | city | State of Sarawak | Malaysia | 1.4333333 | 111.55 | 288 | 5391 |
| Janting | city | State of Sarawak | Malaysia | 1.6333333 | 111.8 | 1200 | 1683 |
| Jegan | city | State of Sarawak | Malaysia | 3.5833333 | 114.1166667 | 528 | 774 |
| Jelau Nanga | city | State of Sarawak | Malaysia | 1.4833333 | 111.5833333 | 337 | 4786 |
| Jelau Ulu | city | State of Sarawak | Malaysia | 1.4833333 | 111.6 | 629 | 5539 |
| Jerai | city | State of Sarawak | Malaysia | 1.5333333 | 111.4166667 | 193 | 4428 |
| Jerai Rumah Langgie | city | State of Sarawak | Malaysia | 1.5333333 | 111.4166667 | 193 | 4428 |
| Jerijeh | city | State of Sarawak | Malaysia | 2.15 | 111.1833333 | 3 | 1624 |
| Jok | city | State of Sarawak | Malaysia | 1.4666667 | 111.7 | 898 | 5036 |
| Jongkong Pandak | city | State of Sarawak | Malaysia | 1.2833333 | 111.3 | 374 | 2752 |
| Jongkong Panjai | city | State of Sarawak | Malaysia | 1.3 | 111.2833333 | 403 | 2422 |
| Julau | city | State of Sarawak | Malaysia | 2.0166667 | 111.9166667 | 91 | 2183 |
| Jumbit | city | State of Sarawak | Malaysia | 1.1166667 | 111.4333333 | 570 | 3612 |
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