| Author(s) | Organization(s) | Session |
| Dahm, Anna | Hochschule Ruhr West, Germany | Poster Session (Part I) |
| Daikeler, Jessica | GESIS Leibniz Institute for the Social Sciences | Methods to Improve Questionnaires Workshop 4 Presenter |
| de Nigris, Sarah | Institute for Web Science and Technologies, Universität Koblenz-Landau | Citizens on Social Media |
| Dell'Olio, Luigi | Universidad de Cantabria, Santander, Spain | Poster Session (Part I) |
| Dethlefsen, Hans | DB Fernverkehr AG | GOR Best Practice Award 2019 Competition II |
| Di Gangi, Massimo | Università degli Studi di Messina, Italy | Poster Session (Part I) |
| Diel, Vera | Henkel AG, Germany | GOR Best Practice Award 2019 Competition I |
| Dössel, Christian | PRS IN VIVO Germany GmbH, Germany | Online Reputation and Influencer Marketing Presenter |
| Doyle, Patrick C. | Northern Arizona University, United States of America | Opportunities and Challenges of Digitalization |
| Drefs, Ines | GO FAIR International Support & Coordination Office, Germany | Poster Session (Part I) Presenter |
| Droste, Benedikt | MSR Consulting Group GmbH, Germany | Data Systems instead of Ad Hoc Research? |
| Durrant, Gabriele | University of Southampton, United Kingdom | Mixed-Modes and Mixed-Devices Mobile Surveys |
| Dust, Lisa | Facts and Stories GmbH, Germany | Poster Session (Part I) Presenter |