| Leon Eyrich Jessen | Groupleader, Associate Professor | DTU Health Tech | |  |
| Simone Kromand Jessen | Hjælpelærer | DTU Compute | | |
| Lone Jessen | Academic Employee | DTU Aqua | | |
| Rafaela Rodrigues de Jesus | PhD Student | DTU National Food Institute | | |
| Praissy Zefi Jeyakumar | Research Assistant | DTU National Food Institute | | |
| Shubhangi Jha | PhD Student | DTU Construct | | |
| Xiaodong Jia | Tenure Track researcher | DTU Wind | | |
| Jie Jian | Postdoc | DTU Chemical Engineering | | |
| Jie Jian | PhD Privatist | DTU Chemical Engineering | | |
| Yu Jiang | Associate Professor | DTU Management | +45 45 25 15 39 | |
| Kun Jiang | Postdoc | DTU Health Tech | | |
| Tao Jiang | Postdoc | DTU Sustain | +45 45 25 14 78 | |
| Xinglin Jiang | Researcher | DTU Bioengineering | | |
| Jiayi Jiang | Postdoc | DTU National Food Institute | | |
| Jiayu Jiang | PhD Student | BRIGHT | | |
| Cristiane Mitchel Sanchez Jimenez | Data analyst | DTU Chemical Engineering | | |
| Natalia Perez Jimenez | PhD Student | DTU Health Tech | | |
| Alberto Garcia Jimenez | Postdoc | DTU Health Tech | | |
| Mireia Bernuz Jimeno | Postdoc | DTU Health Tech | | |
| Esther Olaoluwa Jimoh | Student Assistant | AFRI | | |
| Weiguang Jin | Postdoc | DTU Health Tech | +45 50 36 30 77 | |
| Peng Jin | Postdoc | DTU Construct | +45 31 81 59 62 | |
| Shuowen Jin | Postdoc | DTU Space | | |
| Liqin Jin | Post Doc. | DTU Wind | +45 21 79 88 25 | |
| Joerg R. Jinschek | Professor | DTU Nanolab | +45 45 25 56 40 | |
| Alexandru Jizdan | Hjælpelærer | DTU Compute | | |
| Bjørt Óladóttir Joensen | VPX Fellow | DTU Physics | 004525555069 | |
| Anna Joensen | Administrative Coordinator | DTU Construct | +45 45 25 13 72 | |
| Jan Joensen | Laboratory Coordinator | BRIGHT | +45 21 12 73 47 | |
| Mette Johannesen | SPS-vejleder | ADM4 | | |
| Ignacio Johannesen | Postdoc | DTU Wind | +45 22 21 02 09 | |
| Susan Zumbach Johannesen | PhD Administrator/Coordinator | DTU Aqua | +45 31 96 49 62 | |
| Christina Andrea Johannesen | Chefkonsulent | AFRI | +45 93 51 01 79 | |
| Flemming Johannesen | Fisheries Technician | DTU Aqua | | |
| Vibeke Johannessen | Graphic designer and secretarial officer | DTU National Food Institute | +45 28 11 09 08 | |
| Louise Stenderup Johannessen | Head of Section | CAS | +45 93 51 03 62 | |
| Christina Boje Johannsen | Senior Academic Officer | ADM4 | +45 93 51 13 28 | |
| Janemaria Isabella Johannsen | Institute Secretary | DTU National Food Institute | +45 35 88 71 00 | |
| Tobias Mandrup Johansen | Udvikler | Arcanic | | |
| Wen Ji Johansen | VHDL Designer | DTU Space | | |
| Mikkel Lassen Johansen | PhD Student | DTU Management | | |
| Tom Keinicke Johansen | Associate Professor | DTU Space | +45 45 25 37 70 | |
| Vicky Johansen | Senior Officer | ADM4 | +45 93 51 16 64 | |
| Pi Lærke Johansen | PhD Student | DTU Bioengineering | | |
| Kristoffer Haurum Johansen | Assistant Professor | DTU Health Tech | +45 30 26 30 63 | |
| Joachim Johansen | Research Assistant | DTU Health Tech | | |
| Magnus Banke Johansen | Research Assistant | DTU Chemical Engineering | | |
| Sofie Frydenrejn Johansen | Ekstern lektor | DTU Construct | | |
| Leif Steen Johansen | Head of Operations, Ph.D. | DTU Nanolab | +45 45 25 57 13 | |
| Charlie Johansen | Laboratory technician | DTU Chemistry | +45 45 25 23 42 | |
| David Wang Johansen | Part-time Assistant Programmer | DTU Compute | | |
| Rikke Nord Johansen | Laboratory Technician | DTU Bioengineering | | |
| Tommy Johansen | Professor | DTU Engineering Technology | +45 23 67 24 49 | |
| Nicolai Frost-Jensen Johansen | Development engineer | DTU Wind | +45 40 83 07 84 | |
| Nina Johansen | Service Assistant | DTU Energy | | |
| Helle Krogh Johansen | Professor, consultant, DMSc. | BRIGHT | +45 31 22 84 06 | |
| Helle Krogh Johansen | Adjungeret Professorer | DTU Health Tech | | |
| Kim Johansen | Guest Researcher | DTU National Food Institute | | |
| David Palm Borup Johansen | PhD student | DTU Physics | | |
| Tobias Peter Johansson | Teaching Associate Professor | DTU Physics | +45 31 95 90 32 | |
| Bjørn Sparre Johansson | Specialkonsulent | ADM4 | +45 45 25 11 80 | |
| Isabelle Johansson | Postdoc | DTU Aqua | +45 51 15 74 95 | |
| Staffan Andreas Johansson | Akademisk medarbejder | DTU Bioengineering | | |
| Bengt Håkan Johansson | Professor | DTU Construct | | |
| Viktor Stenby Johansson | Industrial PhD Student | DTU Compute | | |
| Hanna Katarina Lilith Johansson | Associate Professor | DTU National Food Institute | +45 35 88 72 73 | |
| Ida Stub Johansson | Program Coordinator | DTU Learn for Life | +45 20 60 59 12 | |
| Julie Johansson | Recruitment Consultant & Strategic Partner | ADM3 | +45 93 51 12 70 | |
| Ulla Johanne Johansson | Specialkonsulent, journalist | AKM | +45 93 51 17 13 | |
| Fredrik Johansson | Laboratory Engineer | DTU Sustain | | |
| Michael Arthur St John | Emeritus, Senior Researcher | DTU Aqua | +45 21 79 89 32 | |
| Tammi Vander Ploeg Johnsen | Studenterstudievejleder | DTU Bioengineering | | |
| Katarina Gundsø Johnsen | Head of Quality Assurance | DTU Health Tech | +45 30 53 42 29 | |
| Markus Mayntz Johnsen | Science Communicator | DTU Bioengineering | +45 24 25 99 86 | |
| Martin Johnson | Teamleder | ADM5 | +45 28 95 44 72 | |
| Alfred Jokumsen | Emeritus | DTU Aqua | +45 35 88 32 57 | |
| Olivier Jolliet | Professor | DTU Sustain | +45 45 25 15 44 | |
| Sigrun Huld Jonasdottir | Senior Researcher | DTU Aqua | | |
| Per Thor Jonassen | assistant engineer | DTU Health Tech | +45 51 71 77 74 | |
| Ida Jones | Student Assistant | DTU National Food Institute | | |
| Denisa Jones | Laboratory Technician | DTU Bioengineering | | |
| Martinus Franciscus J Jonkers | Mechanic | CAS | +45 93 51 09 60 | |
| Mikkel Jordahn | Postdoc | DTU Compute | | |
| Klara Jordahn | Studenterstudievejleder | ADM4 | | |
| Niklas Braarud Jordal | Academic Employee | DTU Sustain | | |
| Daniel Bernardo Garcia Jorgensen | Senior Officer | DTU National Food Institute | +45 93 51 01 69 | |
| Pierre Joris | Postdoc | BRIGHT | | |
| Merin Joseph | Postdoc | DTU Chemistry | | |
| Ahmad JozeSalimkhani | Automation Engineer | IT Service | | |
| Ahmad JozeSalimkhani | Automation Engineer | CROME | | |
| Leon Mishnaevsky Jr. | Senior Scientist | DTU Wind | +45 46 77 57 29 | |
| Víctor Fiérrez Juan | Research Assistant | BRIGHT | +45 91 42 68 52 | |
| Ida Metzsch Juel | Hjælpelærer | DTU Engineering Technology | | |
| Michael Juhl | Special Consultant - 10 | DTU Electro | +45 45 25 63 60 | |
| Anne-Kathrin Juhl | PhD Student | DTU Energy | | |
| Mads Juhl | Postdoc | DTU Chemical Engineering | | |
| Karsten Juhl | Messenger | DTU Engineering Technology | +45 35 88 50 93 | |
| Achille Julienne | Industrial PhD Student | BRIGHT | | |
| Arash July | PhD Student | DTU Engineering Technology | +45 93 51 00 53 | |
| Tan Hiong Jun | PhD Student | DTU Sustain | | |