Staff (theoretical research)
| Einar H Guðmundsson | Professor emeritus | Astrophysics |
| Gunnlaugur Björnsson | Professor | Astrophysics |
| Ivan Shelykh | Professor | Solid state physics |
| Jesus Zavala Franco | Professor | Astrophysics |
| Lárus Thorlacius | Professor | Theoretical high energy physics |
| Páll Jakobsson | Professor | Astrophysics |
| Sigurður Örn Stefánsson | Professor | Mathematical physics, Probability theory, Graph theory |
| Valentina Giangreco Puletti | Professor | Theoretical high energy physics |
| Viðar Guðmundsson | Professor | Solid state physics |
| Þórður Jónsson | Professor emeritus | Mathematical and theoretical physics |
Staff (research in applied physics)
| Einar Örn Sveinbjörnsson | Professor | Solid state physics |
| Friðrik Magnus | Professor | Solid state physics |
| Haraldur Ólafsson | Professor | Atmospheric sciences |
| Jón Tómas Guðmundsson | Professor | Plasma and semiconductor physics |
| Snorri Þorgeir Ingvarsson | Professor | Solid state physics |
| Sveinn Ólafsson | Research professor | Nanophysics |
| Unnar Bjarni Arnalds | Assistant professor | Solid state physics |
| Jón Emil Guðmundsson | Assistant Professor | Observational cosmology |
Research specialists and postdocs
| Diego Hidalgo | Postdoc | Theoretical high energy physics |
| Grzegorz Jan Kwiatkowski | Postdoc | |
| Hemanadhan Myneni | Postdoc | |
| Kristján Óttar Klausen | Postdoc | Condensed matter physics |
| Luciano Siliano Ricco | Postdoc | Solid state physics |
PhD students
| Alexia Nix | Theoretical high energy physics | |
| Evangelos Tsolakidis | Theoretical high energy physics | |
| Matthias B. Harksen | Theoretical high energy physics | |
| Vyshnav Mohan | Theoretical high energy physics |