| Piotr Jankowski | Postdoc | DTU Energi | |  |
| Karina Jansen | Laborant | DTU Bioengineering | 45 25 27 78 |  |
| Teunis Jansen | Seniorforsker | DTU Aqua | 35 88 33 55 |  |
| Rikke Greve Jansen | HR Arbejds- og opholdstilladelseskoordinator | Koncern HR | 45 25 78 21 |  |
| Henri Jansen | Professor | DTU Nanolab | 45 25 64 33 |  |
| Charlotte Uldahl Jansen | Ph.d.-studerende | DTU Kemi | |  |
| Jonathan Emil Gundorph Jansen | Studentermedhjælper | DTU Space | |  |
| Michelle Jansman | Ph.d.-studerende | DTU Sundhedsteknologi | |  |
| Henning Thorbjørn Janssen | Servicemedarbejder | Campus Service | 45 25 12 07 |  |
| Kira Hyldekær Janstrup | Adjunkt | DTU Management | 45 25 65 26 |  |