Participants
| Conor de Lion | Ireland |
| Carlo D'Ippoliti | Italy |
| Atish Dabholkar | India |
| Melinda Dabis | Hungary |
| Sharizad Dahlan | Malaysia |
| Rana Dajani | United States of America |
| Sarolta Dallos | |
| Thierry Damerval | France |
| Sanja Damjanovic | Montenegro |
| Vladimir Danailov | Bulgaria |
| Ivan Danilin | Russian Federation |
| Beatrix Dányi | Hungary |
| Dóra Darvas | |
| Suranjan Das | India |
| Dr. Shouro Dasgupta | Bangladesh |
| Jonathan Dawes | United Kingdom |
| Martín De Ambrosio | Argentina |
| Alfonso de Hoyos y Fernández de Córdova | Spain |
| Antonio De Sousa Abreu | Portugal |
| Nóra Deák | Hungary |
| Ben Deighton | United Kingdom |
| Éva Dékány | Hungary |
| Gergely Deli | Hungary |
| Shirchin Demberel | Mongolia |
| Nicola Dengo | Italy |
| Professor Anna Di Ciaccio | Italy |
| Madiagne Diallo | Senegal |