| Clinical Medicine · 19 listed authors (30.2%) |
| Pharmacology & Pharmacy | 5 | 7.9% | 2 | Loftsson, Thorsteinn #6,442 |
| Respiratory System | 3 | 4.8% | 0 | Gudbjartsson, Tómas #186,147 |
| General & Internal Medicine | 2 | 3.2% | 0 | Sigurvinsdóttir, Rannveig S. #150,591 |
| Ophthalmology & Optometry | 2 | 3.2% | 1 | Stefánsson, Einar #42,458 |
| Cardiovascular System & Hematology | 1 | 1.6% | 0 | Aspelund, Thor #223,572 |
| Dentistry | 1 | 1.6% | 1 | Pjetursson, Bjarni Elvar #47,948 |
| Dermatology & Venereal Diseases | 1 | 1.6% | 0 | Sigurgeirsson, Bárdur #247,874 |
| Gastroenterology & Hepatology | 1 | 1.6% | 1 | BjÖrnssÖn, Einar Stefán #3,527 |
| Immunology | 1 | 1.6% | 1 | Kristinsson, Sigurdur Yngvi #63,060 |
| Psychiatry | 1 | 1.6% | 1 | Young, Susan Jane #40,439 |
| Earth & Environmental Sciences · 8 listed authors (12.7%) |
| Geochemistry & Geophysics | 7 | 11.1% | 2 | Gíslason, Sigurður Reynir #33,192 |
| Information & Communication Technologies · 6 listed authors (9.5%) |
| Artificial Intelligence & Image Processing | 3 | 4.8% | 0 | Apruzzese, Giovanni #152,020 |
| Networking & Telecommunications | 2 | 3.2% | 2 | Kozieł, Sławomir Marcin #11,344 |
| Computation Theory & Mathematics | 1 | 1.6% | 0 | Halldórsson, Magnús M. #238,142 |
| Engineering · 5 listed authors (7.9%) |
| Geological & Geomatics Engineering | 2 | 3.2% | 2 | Ghamisi, Pedram #8,321 |
| Chemical Engineering | 1 | 1.6% | 0 | Wu, Bing #111,806 |
| Operations Research | 1 | 1.6% | 1 | Sawik, Tadeusz J. #16,504 |
| Biomedical Research · 4 listed authors (6.3%) |
| Developmental Biology | 6 | 9.5% | 5 | Stéfansson, Kári #22,166 |
| Physics & Astronomy · 4 listed authors (6.3%) |
| Applied Physics | 2 | 3.2% | 0 | Khan, Muhammad Isa #264,039 |
| Chemical Physics | 1 | 1.6% | 1 | Jónsson, Hannes #31,803 |
| Fluids & Plasmas | 1 | 1.6% | 0 | Costa, Pedro S. #227,825 |
| Agriculture, Fisheries & Forestry · 3 listed authors (4.8%) |
| Fisheries | 3 | 4.8% | 2 | Campana, Steven E. #9,037 |
| Public Health & Health Services · 3 listed authors (4.8%) |
| Nursing | 2 | 3.2% | 0 | Sveinsdóttir, Herdís #320,705 |
| Public Health | 1 | 1.6% | 1 | Sigfúsdóttir, Inga Dóra #65,544 |
| Chemistry · 3 listed authors (4.8%) |
| Physical Chemistry | 2 | 3.2% | 1 | Skúlason, Egill #71,726 |
| Enabling & Strategic Technologies · 2 listed authors (3.2%) |
| Energy | 2 | 3.2% | 0 | Heinonen, Jukka Taneli #137,967 |
| Strategic, Defence & Security Studies | 2 | 3.2% | 1 | Gautam, Dipendra #55,884 |
| Economics & Business · 2 listed authors (3.2%) |
| Business & Management | 1 | 1.6% | 1 | Durst, Susanne #45,084 |
| Finance | 1 | 1.6% | 1 | Demir, Ender #36,432 |
| Historical Studies · 1 listed authors (1.6%) |
| Archaeology | 1 | 1.6% | 0 | Lucas, Gavin #125,938 |
| Psychology & Cognitive Sciences · 1 listed authors (1.6%) |
| Experimental Psychology | 1 | 1.6% | 0 | Kristjánsson, Árni Kjalar #136,246 |
| Social Sciences · 1 listed authors (1.6%) |
| Education | 1 | 1.6% | 1 | Einarsdóttir, Jo´Hanna #48,772 |
| Visual & Performing Arts · 1 listed authors (1.6%) |
| Folklore | 1 | 1.6% | 0 | Hafstein, Valdimar Tr #351,025 |