| Dorte Olesen | Consultant, PhD, DSc | DTU Compute | +45 45 25 30 89 |  |
| Maria Bechmann Olesen | Laborant | DTU Health Tech | | |
| John Forbes Olesen | Emeritus | DTU Construct | | |
| Julie Olesen | Biolog | DTU Aqua | | |
| Rie Beck Olin | Assistant Professor | DTU Health Tech | | |
| Ednaldo Thiesen de Oliveira | Ordinary Seaman | DTU Aqua | | |
| Cecilie Sass Olofsson | Dyrepasser | DTU Health Tech | | |
| Fritze Lilian Olsen | Studielektor, Cand. Brom. | DTU Adgangskursus | +45 35 88 52 58 | |
| Nils Olsen | Professor and Head of Geomagnetism and Geospace | DTU Space | +45 45 25 97 08 | |
| Ole Kolvig Olsen | Precision Mechanic / Assistant Engineer | DTU Space | +45 45 25 34 64 | |
| Tine Resting Olsen | HR Secretariat Assistant & Course Coordinator | ADM3 | +45 26 81 02 07 | |
| Kasper Wibeck Olsen | Timelønnet hjælpelærer | DTU Adgangskursus | +45 20 67 98 02 | |
| Kenny Falkær Olsen | Industrial PhD | DTU Compute | | |
| Viktor Emil Olsen | Finmekanikerlærling | DTU Physics | | |
| Jytte Olsen | Service Employee | DTU Bioengineering | | |
| Hervør Lykke Olsen | Business and Community Developer | DTU Skylab | | |
| Tim Felle Olsen | Postdoc | DTU Construct | | |
| Peter Olsen | Teamleder | IT Service | +45 22 11 23 26 | |
| Jan Kent Olsen | Mechanical Engineer | DTU Chemical Engineering | +45 93 51 02 91 | |
| Casper Nøhr Olsen | Udvikler | IT Service | | |
| Emil Vang Olsen | Research Assistant | DTU Sustain | | |
| Mikkel Ditlev Sjøgren Olsen | Research Assistant | DTU Skylab | | |
| Ulrik Lund Olsen | Senior Research Engineer | DTU Physics | +45 24 65 51 69 | |
| Thomas Olsen | Associate Professor | DTU Physics | +45 26 29 06 41 | |
| Kimm Caroline Olsen | Academic Officer, RDM | AFRI | +45 51 15 74 11 | |
| William Kristian Pallisgaard Olsen | Postdoc | DTU Biosustain | | |
| Anders Smærup Olsen | Senior Development Engineer | DTU Wind | +45 93 51 15 33 | |
| Svend K. Olsen | Technical Specialist | DTU Sustain | | |
| Bjarke Tobias Eisensøe Olsen | Researcher | DTU Wind | +45 22 98 76 06 | |
| Erik Kaimer Olsen | Forskningstekniker | DTU Health Tech | +45 93 51 08 43 | |
| Jens Frederik Olsen | Chefkonsulent | AFRI | +45 93 51 02 55 | |
| Mads Olsen | Research Assistant | DTU Chemical Engineering | | |
| Isabella Louise Olsen | IT Supporter | DTU Chemistry | +45 93 51 89 56 | |
| Atli Olsen | Industrial Technician | DTU Chemistry | +45 21 79 91 84 | |
| Jan Olsen | Craftsman | CAS | +45 40 60 47 33 | |
| Stig Irving Olsen | Associate Professor | DTU Sustain | +45 45 25 46 68 | |
| Peter Lindebark Olsen | IT Supporter | IT Service | +45 35 88 85 04 | |
| Inge Holkmann Olsen | Head of Administration | DTU Chemistry | +45 45 25 20 13 | |
| Mikki Andrup Olsen | IT-supporter | IT Service | | |
| Jeppe Olsen | Academic Employee | DTU Aqua | +45 93 51 14 53 | |
| Rikke Levin Rytter Olsen | Business Relationship Manager | IT Service | +45 51 59 30 94 | |
| Poul E Holmdahl Olsen | Project Manager, Chief Consultant | DTU Space | +45 45 25 97 12 | |
| Thomas Jersild Olsen | Bachelor | DTU Space | | |
| Povl Ole Haarlev Olsen | Engineer | DTU Space | +45 45 25 34 67 | |
| Panchale Olsen | Laboratory technician | DTU Health Tech | | |
| Tonny Kiehn Olsen | AV supporter | IT Service | +45 45 25 79 08 | |
| Amalie Louise Hallberg Olsen | Student Assistant | DTU Bioengineering | | |
| Andreas Vang Olsen | Research Assistant | DTU Sustain | | |
| Emil Hovgaard Wrona Olsen | Student Assistant | DTU National Food Institute | | |
| Lone Kirsten Rosenkær Olsen | Head of Purchase, Service and Work Health Safety | DTU Aqua | +45 20 40 22 30 | |
| Ib Steen Olsen | Emeritus | DTU Construct | | |
| Jógvan Magnus Haugaard Olsen | Associate Professor | DTU Chemistry | +45 45 25 20 02 | |
| Gerritdina Marieke Olsman | Ph.d.-studerende | DTU Health Tech | | |
| Peter Olsson | Medhjælper | DTU Space | | |
| Torben Olsson | Chief Engineer | DTU Aqua | +45 91 37 00 83 | |
| Mikael Emil Olsson | Research Engineer | DTU Sustain | +45 30 56 98 94 | |
| Emil Lidman Olsson | Postdoc | DTU Chemical Engineering | | |
| Dags Olsteins | Postdoc | DTU Energy | +45 91 69 69 43 | |
| Henrik Høyer Olufsen | Certified .NET MVC Developer | IT Service | | |
| Oluwadabobomi Grace Oluwadabobomi Grace Davies | Ph.d.-studerende | DTU Chemical Engineering | | |
| Kuba Oniszk | PhD Student | DTU Space | | |
| Carina Onofrei | Hjælpelærer | DTU Management | | |
| Mía López Portillo Ontiveros | Part time student assistant | DTU Biosustain | | |
| Joshua Onyango | Research Assistant | DTU Chemical Engineering | | |
| Robin van Oorschot | Teaching Assistant Professor | DTU Entrepreneurship | +45 45 25 44 16 | |
| Caroline van Oosterhout | Coordinator | DTU Health Tech | +45 45 25 39 50 | |
| Aïda Jiménez Ordoñez | Bachelor | DTU Compute | | |
| Lucas Orellana | Student Assistant | APR | | |
| Frederik Orellana | Research infrastructure architect | IT Service | | |
| Charalampos Orfanidis | Assistant Professor | DTU Compute | +45 45 25 30 56 | |
| Patricia Elizabeth Arias Orozco | Postdoc | DTU Bioengineering | +45 93 84 51 88 | |
| Enrico Orsi | Postdoc | DTU Biosustain | | |
| Esther Prosper Ortega | Research Assistant | DTU Biosustain | | |
| Jean Victor Orth | Fermentation Engineer | DTU Biosustain | | |
| Aina Sendra Ortiz | Research Assistant | DTU Biosustain | | |
| Casper Osborg | Gardener | CAS | +45 45 25 13 44 | |
| Anna Osetrova | Intern | ADM4 | | |
| Yumer Erol Osman | Hjælpelærer | DTU Engineering Technology | | |
| Mona Lykke von Osmanski | Specialkonsulent | ADM4 | +45 22 21 98 91 | |
| Sofie Pflug von der Osten | AC-fuldmægtig | IT Service | | |
| David Ari Ostenfeldt | Student Assistant | ADM4 | | |
| David Ari Ostenfeldt | Hjælpelærer | DTU Management | | |
| Alberte Roed Ostermann | Student Assistant | AFRI | | |
| Eva Ostlind | Hjælpelærer | DTU Wind | | |
| Anu Dinesh Oswal | Research Assistant | DTU Biosustain | | |
| Felipe Mejia Otalvaro | PhD Student | DTU Biosustain | | |
| Saria Otani | Associate Professor | DTU National Food Institute | | |
| Magdalena Maria Otap | Project Manager | CAS | +45 93 59 68 37 | |
| Gerald Innocent Otim | PhD Student | DTU Sustain | | |
| Søren Ott | Senior Scientist | DTU Wind | +45 46 77 50 13 | |
| Frederik Ottesen | Gardener | CAS | +45 40 60 47 54 | |
| Peter Conrad Ottesen | Innovation Partner | DTU Skylab | +45 93 51 19 47 | |
| Noora Annika Ottman | Scientific Center Coordinator Microbiome Health Initiative | DTU National Food Institute | +45 22 75 59 23 | |
| Daniel Jordan Otto | PhD Student | DTU Bioengineering | | |
| Cecilie Fisker Ottosen | Assistant Professor | DTU Sustain | +45 45 25 22 57 | |
| Iver Mølgaard Ottosen | Associate Professor | DTU Engineering Technology | +45 93 51 06 57 | |
| Lisbeth M. Ottosen | Professor, head of section for Materials and Durability | DTU Sustain | +45 45 25 22 60 | |
| Yiyu Ou | Associate Professor | DTU Electro | +45 45 25 66 37 | |
| Haiyan Ou | Group leader, Associate Professor | DTU Electro | +45 45 25 63 80 | |
| Zalikha Ousou | Hjælpelærer | DTU Management | | |