| Jeppe Olsen | Specialkonsulent | DTU Aqua | 93 51 14 53 |  |
| Jan Olsen | Håndværker | CAS | 40 60 47 33 | |
| Casper Nøhr Olsen | Udvikler | IT Service | | |
| Kenny Falkær Olsen | Erhvervs-ph.d. | DTU Compute | | |
| Erik Kaimer Olsen | Forskningstekniker | DTU Sundhedsteknologi | 93 51 08 43 | |
| Povl Ole Haarlev Olsen | Ingeniør | DTU Space | 45 25 34 67 | |
| Stig Irving Olsen | Lektor | DTU Sustain | 45 25 46 68 | |
| Fritze Lilian Olsen | Studielektor, Cand. Brom. | DTU Adgangskursus | 35 88 52 58 | |
| Panchale Olsen | Laborant | DTU Sundhedsteknologi | | |
| Bjarke Tobias Eisensøe Olsen | Forsker | DTU Wind | 22 98 76 06 | |
| Emil Vang Olsen | Ph.d.-studerende | DTU Sustain | | |
| Anders Smærup Olsen | Seniorudviklingsingeniør | DTU Wind | 93 51 15 33 | |
| Simon Thusgaard Olsen | Gæstestuderende | DTU Aqua | | |
| Peter Lindebark Olsen | IT Supporter | IT Service | 35 88 85 04 | |
| Tonny Kiehn Olsen | AV supporter | IT Service | 45 25 79 08 | |
| Nils Olsen | Professor og afdelingsleder for Geomagnetisme og geospace | DTU Space | 45 25 97 08 | |
| William Kristian Pallisgaard Olsen | Postdoc | BRIGHT | 30 28 31 03 | |
| Amalie Louise Hallberg Olsen | Studentermedhjælper | DTU Bioengineering | | |
| Emma Methner Olsen | Videnskabelig assistent | DTU Energi | | |
| Astrid Aabo Olsen | Videnskabelig assistent | DTU Kemi | | |
| Jens Frederik Olsen | Chefkonsulent | AFRI | 93 51 02 55 | |
| Mark Nyholm Olsen | Hjælpelærer | DTU Engineering Technology | | |
| Mikki Andrup Olsen | IT-supporter | IT Service | | |
| Emil Hovgaard Wrona Olsen | Studentermedhjælper | DTU Fødevareinstituttet | | |
| Tine Resting Olsen | HR-sekretariatsmedarbejder og kursuskoordinator | AHR | 26 81 02 07 | |
| Lone Kirsten Rosenkær Olsen | Leder af indkøb/Serviceenheden | DTU Aqua | 20 40 22 30 | |
| Inge Holkmann Olsen | Administrationschef | DTU Kemi | 93 51 17 14 | |
| Gerritdina Marieke Olsman | Ph.d.-studerende | DTU Sundhedsteknologi | | |
| Albert Brincker Olson | Ph.d.-studerende | DTU Management | | |
| Torben Olsson | Maskinchef | DTU Aqua | 91 37 00 83 | |
| Mikael Emil Olsson | Analysekemiker | DTU Sustain | 30 56 98 94 | |
| Peter Olsson | Medhjælper | DTU Space | | |
| Emil Lidman Olsson | Forsker | DTU Kemiteknik | | |
| Henrik (Oluf) Høyer Olufsen | Certificeret .NET MVC Udvikler | IT Service | | |
| Oluwadabobomi Grace Oluwadabobomi Grace Davies | Ph.d.-studerende | DTU Kemiteknik | 91 42 12 98 | |
| Farzaneh Omidvarnia | MorphoFlux /DTU Skylab Startup Program | DTU Skylab | 53 14 82 46 | |
| Anton Rodbjerg Ommen | LUME /Skylab Startup Program | DTU Skylab | 60 83 20 16 | |
| Kuba Oniszk | Ph.d.-studerende | DTU Space | | |
| Carina Onofrei | Hjælpelærer | DTU Management | | |
| Mía López Portillo Ontiveros | Part time student assistant | BRIGHT | | |
| Joshua Onyango | Ph.d.-studerende | DTU Kemiteknik | | |
| Robin van Oorschot | Teaching Associate Professor | DTU Entrepreneurship | 45 25 44 16 | |
| Caroline van Oosterhout | Koordinator | DTU Sundhedsteknologi | 45 25 39 50 | |
| Aïda Jiménez Ordoñez | Bachelor | DTU Compute | | |
| Esteban Orellana | Postdoc | DTU Sustain | | |
| Frederik Orellana | Forsknings-infrastruktur-arkitekt | IT Service | | |
| Lucas Orellana | Studentermedhjælper | APR | | |
| Charalampos Orfanidis | Adjunkt | DTU Compute | 45 25 30 56 | |
| Evangelos Orfanos | Guest Student | DTU Nanolab | | |
| Jeppe Ormstrup | Ekstern lektor | DTU Construct | | |
| Margarida Correia Ornelas | Studentermedhjælper | DTU Bioengineering | | |
| Patricia Elizabeth Arias Orozco | Postdoc | DTU Bioengineering | 93 84 51 88 | |
| Enrico Orsi | Postdoc | BRIGHT | | |
| Enrique Ortega-Forte | Postdoc | DTU Kemi | | |
| Jean Victor Orth | Fermentation Engineer | BRIGHT | | |
| Alessia Ortile | Ph.d.-studerende | DTU Wind | | |
| Aina Sendra Ortiz | Laboratory Automation Specialist | BRIGHT | | |
| Casper Osborg | Gartner | CAS | 45 25 13 44 | |
| Anna Osetrova | Praktikant | AUS | | |
| Amaal Osman | Studentermedhjælper | AØR | | |
| Mona Lykke von Osmanski | Specialkonsulent | AUS | 22 21 98 91 | |
| David Ari Ostenfeldt | Hjælpelærer | DTU Management | | |
| David Ari Ostenfeldt | Studentermedhjælper | AUS | | |
| Alberte Roed Ostermann | Studentermedhjælper | AFRI | | |
| Eva Ostlind | Hjælpelærer | DTU Wind | | |
| Felipe Mejia Otalvaro | PhD Student | BRIGHT | | |
| Saria Otani | Lektor | DTU Fødevareinstituttet | | |
| Magdalena Maria Otap | Projektleder | CAS | 93 59 68 37 | |
| Gerald Innocent Otim | Ph.d.-studerende | DTU Sustain | | |
| Søren Ott | Seniorforsker | DTU Wind | 46 77 50 13 | |
| Frederik Ottesen | Gartner | CAS | 40 60 47 54 | |
| Peter Conrad Ottesen | Innovation Partner | DTU Skylab | 93 51 19 47 | |
| Noora Annika Ottman | Centerkoordinator | DTU Fødevareinstituttet | 22 75 59 23 | |
| Daniel Jordan Otto | Ph.d.-studerende | DTU Bioengineering | | |
| Cecilie Fisker Ottosen | Adjunkt | DTU Sustain | 45 25 22 57 | |
| Lisbeth M. Ottosen | Professor, sektionsleder Construction Materials & Durability | DTU Sustain | 45 25 22 60 | |
| Iver Mølgaard Ottosen | Lektor | DTU Engineering Technology | 93 51 06 57 | |
| Yiyu Ou | Lektor | DTU Electro | 45 25 66 37 | |
| Haiyan Ou | Gruppeleder, Lektor | DTU Electro | 45 25 63 80 | |
| Zalikha Ousou | Hjælpelærer | DTU Management | | |
| Micky Out | Projektkoordinator | DTU Space | 93 51 09 81 | |
| Qian Ouyang | Ingeniør | DTU Kemiteknik | | |
| Ziwei Ouyang | Professor | DTU Electro | 45 25 57 64 | |
| Max Daniel Overath | Postdoc | DTU Bioengineering | | |
| Emil Andranik Overbeck | IT-supporter | DTU Compute | | |
| Tenna Overby | Chefkonsulent | AFRI | 61 39 62 77 | |
| Ida Emilie Kryger Overgaard | Studentermedhjælper | AFRI | | |
| Tobias Overgaard | Erhvervs-ph.d. | DTU Compute | | |
| Morten Overgaard | Kontorchef | AUS | 45 25 98 50 | |
| Johanne Badsberg Overgaard | Ph.d.-studerende | DTU Sundhedsteknologi | | |
| Lukas Markus Overgaard | Fuldmægtig | AFRI | 22 89 35 10 | |
| Nanna Brøgger Overgård | Projektleder | CAS | 93 51 18 08 | |
| Martin Ovesen | Postdoc | DTU Fysik | | |
| Selina Ringsborg Howalt Owe | Postdoc | DTU Space | | |
| Mikolaj Owsianiak | Seniorforsker | DTU Sustain | 45 25 48 05 | |
| Carol Anne Oxborrow | Special konsulent | DTU Space | | |
| Leif Katsuo Oxenløwe | Gruppeleder, Professor | DTU Electro | 45 25 37 84 | |
| Julie Katrine Oxenvad | Sekretariatsleder | DTU Bioengineering | 93 51 18 67 | |
| Liliya Oxtorp | Lektor | DTU Engineering Technology | | |
| Christian Schou Oxvig | Specialkonsulent | IT Service | 93 51 05 60 | |