Participants
| Takaaki Kajita | Japan |
| Csaba Kőrösi | Hungary |
| Toshio Koike | Japan |
| Lulu Tunu Kaaya | Tanzania *, United Republic of |
| H.E. Karima Kabbaj | Morocco |
| Akeem Kadiri | Nigeria |
| Csaba Káel | Hungary |
| Hemu Kafle | Nepal |
| Martin Kaggwa | Uganda |
| Petra Kakuk | Hungary |
| Zdenek Kalab | Czech Republic |
| Márk Kállay | Hungary |
| Zsuzsa Kaló | Hungary |
| Gretchen Kalonji | United States of America |
| Tim Kalvelage | Germany |
| Dóra Kalydy | Hungary |
| Tendai Kaniso | Zimbabwe |
| Hiroyuki Kano | Japan |
| Emin Cagri Karahan | Turkey |
| Gulsen Karanis Eksioglu | Turkey |
| Ph.D. Béla Kardon | Hungary |
| Chhatra Karki | Nepal |
| Gábor Kármán | Hungary |
| Krisztina Karsai | Hungary |
| Menale Kassie | Ethiopia |
| Purity Kavuri | Kenya |
| Zeki Kaya | Turkey |