| Niels Jørgen Olesen | Emeritus | DTU Aqua | +45 29 24 43 10 |  |
| Mathis Olesen | AC-TAP | DTU Aqua | |  |
| Pelle Thonning Olesen | Senior Advisor | DTU National Food Institute | +45 35 88 72 09 |  |
| Bjarne W. Olesen | Professor emeritus | DTU Sustain | +45 45 25 41 17 |  |
| Henrik Olesen | Laboratory technician | DTU Physics | +45 46 77 49 31 |  |
| Karine Wermelinger de Oliveira | Research Assistant | DTU National Food Institute | +45 50 22 06 50 |  |
| Ednaldo Thiesen de Oliveira | Ordinary Seaman | DTU Aqua | |  |
| Fabricio Oliveira | Associate Professor, Head of Section | DTU Management | |  |
| Conrado Marco Olivieri | Assistent | DTU Health Tech | |  |
| Joni Sampsa Olavi Ollonen | Postdoc | DTU Construct | |  |
| Thomas Olsen | Associate Professor | DTU Physics | +45 26 29 06 41 |  |
| Poul E Holmdahl Olsen | Project Manager, Chief Consultant | DTU Space | +45 45 25 97 12 |  |
| Kasper Wibeck Olsen | Timelønnet hjælpelærer | DTU Adgangskursus | +45 20 67 98 02 |  |
| Atli Olsen | Industrial Technician | DTU Chemistry | +45 21 79 91 84 |  |
| Viktor Emil Olsen | Ingeniørassistent | DTU Physics | |  |
| Jytte Olsen | Service Employee | DTU Bioengineering | |  |
| Ulrik Lund Olsen | Senior Research Engineer | DTU Physics | +45 24 65 51 69 |  |
| Ole Kolvig Olsen | Precision Mechanic / Assistant Engineer | DTU Space | +45 45 25 34 64 |  |
| Tim Felle Olsen | Postdoc | DTU Construct | |  |
| Jan Kent Olsen | Mechanical Engineer | DTU Chemical Engineering | +45 93 51 02 91 |  |
| Ib Steen Olsen | Emeritus | DTU Construct | |  |
| Jeppe Olsen | Senior Officer | DTU Aqua | +45 93 51 14 53 |  |
| Jan Olsen | Craftsman | CAS | +45 40 60 47 33 |  |
| Casper Nøhr Olsen | Udvikler | IT Service | |  |
| Kenny Falkær Olsen | Industrial PhD | DTU Compute | |  |
| Povl Ole Haarlev Olsen | Engineer | DTU Space | +45 45 25 34 67 |  |
| Stig Irving Olsen | Associate Professor | DTU Sustain | +45 45 25 46 68 |  |
| Fritze Lilian Olsen | Studielektor, Cand. Brom. | DTU Adgangskursus | +45 35 88 52 58 |  |
| Bjarke Tobias Eisensøe Olsen | Researcher | DTU Wind | +45 22 98 76 06 |  |
| Emil Vang Olsen | PhD Student | DTU Sustain | |  |
| Anders Smærup Olsen | Senior Development Engineer | DTU Wind | +45 93 51 15 33 |  |
| Peter Lindebark Olsen | IT Supporter | IT Service | +45 35 88 85 04 |  |
| Tonny Kiehn Olsen | AV supporter | IT Service | +45 45 25 79 08 |  |
| Nils Olsen | Professor and Head of Geomagnetism and Geospace | DTU Space | +45 45 25 97 08 |  |
| William Kristian Pallisgaard Olsen | Postdoc | BRIGHT | +45 30 28 31 03 |  |
| Amalie Louise Hallberg Olsen | Student Assistant | DTU Bioengineering | |  |
| Emma Methner Olsen | Research Assistant | DTU Energy | |  |
| Astrid Aabo Olsen | Research Assistant | DTU Chemistry | |  |
| Jens Frederik Olsen | Chefkonsulent | AFRI | +45 93 51 02 55 |  |
| Mark Nyholm Olsen | Hjælpelærer | DTU Engineering Technology | |  |
| Mikki Andrup Olsen | IT-supporter | IT Service | |  |
| Emil Hovgaard Wrona Olsen | Student Assistant | DTU National Food Institute | |  |
| Tine Resting Olsen | HR Secretariat Assistant & Course Coordinator | ADM3 | +45 26 81 02 07 |  |
| Lone Kirsten Rosenkær Olsen | Head of Purchase, Service and Work Health Safety | DTU Aqua | +45 20 40 22 30 |  |
| Inge Holkmann Olsen | Head of Administration | DTU Chemistry | +45 93 51 17 14 |  |
| Svend K. Olsen | Technical Specialist | DTU Sustain | |  |
| Panchale Olsen | Laboratory technician | DTU Health Tech | +45 93 51 13 49 |  |
| Lasse Olsen | ERLEtek /DTU Skylab Incubator | DTU Skylab | +45 36 20 49 88 |  |
| Erik Kaimer Olsen | Forskningstekniker | DTU Health Tech | +45 93 51 08 43 |  |
| Simon Thusgaard Olsen | Guest Student | DTU Aqua | |  |
| Gerritdina Marieke Olsman | Ph.d.-studerende | DTU Health Tech | |  |
| Albert Brincker Olson | PhD Student | DTU Management | |  |
| Torben Olsson | Chief Engineer | DTU Aqua | +45 91 37 00 83 |  |
| Peter Olsson | Medhjælper | DTU Space | |  |
| Emil Lidman Olsson | Researcher | DTU Chemical Engineering | |  |
| Mikael Emil Olsson | Research Engineer | DTU Sustain | +45 30 56 98 94 |  |
| Henrik (Oluf) Høyer Olufsen | Certified .NET MVC Developer | IT Service | |  |
| Oluwadabobomi Grace Oluwadabobomi Grace Davies | PhD Student | DTU Chemical Engineering | +45 91 42 12 98 |  |
| Farzaneh Omidvarnia | MorphoFlux /DTU Skylab Startup Program | DTU Skylab | +45 53 14 82 46 |  |
| Anton Rodbjerg Ommen | LUME /Skylab Startup Program | DTU Skylab | +45 60 83 20 16 |  |
| Kuba Oniszk | PhD Student | DTU Space | |  |
| Carina Onofrei | Hjælpelærer | DTU Management | |  |
| Mía López Portillo Ontiveros | Part time student assistant | BRIGHT | |  |
| Joshua Onyango | PhD Student | DTU Chemical Engineering | |  |
| Robin van Oorschot | Teaching Associate 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 | |  |
| Frederik Orellana | Research infrastructure architect | IT Service | |  |
| Lucas Orellana | Student Assistant | APR | |  |
| Esteban Orellana | Postdoc | DTU Sustain | |  |
| Charalampos Orfanidis | Assistant Professor | DTU Compute | +45 45 25 30 56 |  |
| Evangelos Orfanos | Guest Student | DTU Nanolab | |  |
| Jeppe Ormstrup | Part-Time Lecturer | DTU Construct | |  |
| Margarida Correia Ornelas | Student Assistant | DTU Bioengineering | |  |
| Patricia Elizabeth Arias Orozco | Postdoc | DTU Bioengineering | +45 93 84 51 88 |  |
| Enrico Orsi | Postdoc | BRIGHT | |  |
| Enrique Ortega-Forte | Postdoc | DTU Chemistry | |  |
| Jean Victor Orth | Fermentation Engineer | BRIGHT | |  |
| Alessia Ortile | PhD Student | DTU Wind | |  |
| Aina Sendra Ortiz | Laboratory Automation Specialist | BRIGHT | |  |
| Casper Osborg | Gardener | CAS | +45 45 25 13 44 |  |
| Anna Osetrova | Intern | ADM4 | |  |
| Amaal Osman | Studentermedhjælper | ADM5 | |  |
| Mona Lykke von Osmanski | Specialkonsulent | ADM4 | +45 22 21 98 91 |  |
| David Ari Ostenfeldt | Hjælpelærer | DTU Management | |  |
| David Ari Ostenfeldt | Student Assistant | ADM4 | |  |
| Alberte Roed Ostermann | Student Assistant | AFRI | |  |
| Eva Ostlind | Hjælpelærer | DTU Wind | |  |
| Felipe Mejia Otalvaro | PhD Student | BRIGHT | |  |
| 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 & Team Leader | 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 |  |
| Lisbeth M. Ottosen | Professor, head of section Construction Materials & Durability | DTU Sustain | +45 45 25 22 60 |  |
| Iver Mølgaard Ottosen | Associate Professor | DTU Engineering Technology | +45 93 51 06 57 |  |