| 1308 | Norwegian Computing Center |  | 1282 | 1649 | 1334 | 2460 |
| 3339 | Norwegian Folk Museum | | 1398 | 1164 | 2538 | 3879 |
| 4920 | Norwegian Forest Museum | | 2186 | 3466 | 2538 | 3879 |
| 881 | Norwegian Geotechnical Institute | | 3144 | 1702 | 822 | 1427 |
| 411 | Norwegian Institute for Air Research | | 1179 | 614 | 624 | 914 |
| 3458 | Norwegian Institute for Cultural Heritage Research | | 3767 | 2132 | 2276 | 3879 |
| 459 | Norwegian Institute for Nature Research | | 413 | 1153 | 351 | 755 |
| 2843 | Norwegian Institute for Studies in Innovation Research and Education | | 2188 | 1951 | 1400 | 3879 |
| 560 | Norwegian Institute for Water Research | | 4017 | 1481 | 229 | 791 |
| 5483 | Norwegian Institute of Gene Ecology | | 5836 | 3988 | 2538 | 3879 |
| 6536 | Norwegian Institute of Graphic Media | | 7022 | 5455 | 2538 | 3879 |
| 944 | Norwegian Institute of International Affairs | | 898 | 1186 | 1109 | 2039 |
| 5585 | Norwegian Institute of Journalism | | 5417 | 4193 | 2538 | 3879 |
| 5452 | Norwegian Institute of Local History | | 5580 | 3967 | 2538 | 3879 |
| 195 | Norwegian Institute of Public Health | | 768 | 548 | 141 | 263 |
| 5350 | Norwegian Institute of Wood Technology | | 5243 | 3853 | 2538 | 3879 |
| 3403 | Norwegian Language Council | | 1535 | 1247 | 2538 | 3879 |
| 527 | Norwegian Meteorological Institute | | 1231 | 572 | 896 | 1464 |
| 5312 | Norwegian Metrology Service | | 5467 | 3755 | 2538 | 3879 |
| 2925 | Norwegian Nobel Institute | | 5761 | 613 | 2538 | 3879 |
| 400 | Norwegian Polar Institute | | 364 | 516 | 936 | 958 |
| 3545 | Norwegian Social Science Data Services / Norsk senter for forskningsdata | | 351 | 1577 | 2538 | 3879 |
| 4128 | Norwegian Space Centre / Norsk Romsenter | | 1494 | 2302 | 2538 | 3879 |
| 1191 | Norwegian Water Resources and Energy Directorate | | 473 | 975 | 1866 | 2555 |
| 7133 | Norwood Clinic |  | 7767 | 6303 | 2538 | 3879 |
| 371 | Nottingham University Hospitals |  | 2235 | 1417 | 814 | 185 |
| 1758 | Novant Health (Presbyterian Healthcare) | | 728 | 844 | 2377 | 3316 |
| 5376 | Novosibirsk Institute of Traumatology and Orthopedics / Новосибирский научно исследовательский институт травматологии и ортопедии |  | 4671 | 3934 | 2538 | 3879 |
| 4881 | Novosibirsk State Institute of Circulation Pathology Acad E N Meshalkin / Новосибирский научно исследовательский институт патологии кровообращения им акад Е Н Мешалкина | | 3899 | 3304 | 2538 | 3879 |
| 4761 | NSW Breast Cancer Institute |  | 5407 | 3977 | 2538 | 3660 |
| 5201 | NTNU Social Research | | 3777 | 3735 | 2538 | 3879 |
| 2526 | Nuclear Energy Institute | | 3812 | 371 | 2538 | 3879 |
| 1691 | Nuclear Physics Institute ASCR |  | 1924 | 5707 | 1690 | 927 |
| 1897 | Nuclear Safety Institute RAS | | 2906 | 2038 | 2142 | 2919 |
| 3840 | NWO Institutes Organisation NWO-I |  | 3277 | 1735 | 2538 | 3879 |
| 45 | NYU Langone Medical Center | | 451 | 203 | 198 | 32 |
| 922 | Oak Ridge Institute for Science and Education | | 4113 | 899 | 2538 | 834 |
| 21 | Oak Ridge National Laboratory | | 240 | 46 | 23 | 54 |
| 5382 | Oberlinhaus |  | 4350 | 3979 | 2538 | 3879 |
| 362 | Observatoire de la Côte d'Azur |  | 1259 | 828 | 478 | 523 |
| 99 | Observatoire de Paris | | 383 | 158 | 266 | 166 |
| 1883 | Observatoire Océanologique de Banyuls-sur-Mer | | 1449 | 2018 | 889 | 3316 |
| 5516 | Observatorio Astronómico de Mallorca |  | 8091 | 3236 | 2538 | 3879 |
| 4937 | Observatorio Colombiano de Ciencia y Tecnología |  | 3600 | 4173 | 2469 | 3879 |
| 5629 | Observatorio de Prospectiva Tecnológica Industrial | | 6556 | 4143 | 2538 | 3879 |
| 619 | Observatório Nacional |  | 3008 | 1066 | 693 | 1136 |
| 7188 | Observatorio San Calixto |  | 6092 | 6636 | 2538 | 3879 |
| 7571 | Observatorio Tecnológico Textil-Confección | | 7318 | 7176 | 2538 | 3879 |
| 7186 | Ocala Heart and Vascular Institute | | 7553 | 6471 | 2538 | 3879 |
| 5188 | Oceanic Institute | | 7271 | 3367 | 2538 | 3879 |
| 4325 | Oceanographic Research Institute South African Association for Marine Biological Research |  | 5115 | 4579 | 2538 | 3316 |
| 4565 | Ocular Immunology and Uveitus Foundation | | 5188 | 2710 | 2538 | 3879 |
| 741 | Odense University Hospital |  | 1301 | 1654 | 2538 | 166 |
| 5527 | Oestfold Research Foundation | | 4309 | 4196 | 2538 | 3879 |
| 347 | Office National d'Etudes et de Recherches Aérospatiales ONERA | | 912 | 789 | 313 | 587 |
| 5238 | Office National d'Etudes et de Recherches Aérospatiales ONERA Toulouse | | 8091 | 2861 | 2538 | 3879 |
| 2011 | Office National de la Chasse et de la Faune Sauvage | | 1885 | 971 | 1781 | 3660 |
| 3353 | Office of Naval Research | | 2182 | 2970 | 2538 | 3316 |
| 5077 | Office of Public Health and Environmental Hazards | | 5431 | 3441 | 2538 | 3879 |
| 2430 | Oficina Española de Patentes y Marcas | | 86 | 481 | 2538 | 3879 |
| 4937 | Ogden Clinic | | 5040 | 3284 | 2538 | 3879 |
| 2633 | Ohio Aerospace Institute | | 6129 | 3105 | 2538 | 2510 |
| 3295 | Ohio Supercomputer Center | | 2823 | 1052 | 2538 | 3879 |
| 4011 | Oil and Gas Institute in Cracow |  | 2103 | 3522 | 2132 | 3879 |
| 5711 | Oil and Gas Problems Institute RAS / Институт проблем нефти и газа РАН | | 4847 | 4434 | 2538 | 3879 |
| 5504 | Okayama Kyokuto Hospital |  | 6351 | 3957 | 2538 | 3879 |
| 7899 | Okazaki Research Facilities | | 6401 | 7835 | 2538 | 3879 |
| 354 | Okinawa Industrial Technology Center | | 569 | 648 | 221 | 817 |
| 4734 | Oklahoma Blood Institute | | 6351 | 2880 | 2538 | 3879 |
| 685 | Oklahoma Medical Research Foundation | | 2917 | 1694 | 607 | 865 |
| 5776 | Oklahoma State University Medical Center | | 6695 | 4355 | 2538 | 3879 |
| 5985 | Ökumenisches Hainich Klinikum | | 5520 | 4762 | 2538 | 3879 |
| 5523 | Old Church Slavonic Institute |  | 5230 | 5547 | 2501 | 3660 |
| 1248 | Oldenburger Forschungs- und Entwicklungsinstitut für Informatik-Werkzeuge und -Systeme | | 2227 | 1204 | 1231 | 2627 |
| 6304 | Olin Neuropsychiatry Research Center | | 7137 | 5079 | 2538 | 3879 |
| 4825 | Olive View UCLA Medical Center | | 6277 | 5506 | 2538 | 3252 |
| 4466 | Olivia Newton John Cancer Research Institute | | 6011 | 2488 | 2538 | 3879 |
| 4459 | Olympic Park Sports Medicine Centre | | 6123 | 4697 | 2538 | 3316 |
| 5161 | Oman Studies Centre |  | 7518 | 3294 | 2538 | 3879 |
| 5111 | Omega-3 Research Institute | | 7945 | 2904 | 2538 | 3879 |
| 5270 | Omsk Institute of Instrument Engineering / Омский научно исследовательский институт приборостроения | | 3285 | 3865 | 2538 | 3879 |
| 5225 | Omsk Scientific Center SB RAS / Омский научный центр Сибирского отделения РАН | | 3381 | 4886 | 2380 | 3879 |
| 2453 | Onassis Cardiac Surgery Center |  | 5736 | 3767 | 2538 | 1992 |
| 5711 | OncoSalud |  | 5830 | 4349 | 2538 | 3879 |
| 6771 | Onkologischer Schwerpunkt Stuttgart | | 7086 | 5838 | 2538 | 3879 |
| 6790 | Ontar Corporation | | 7725 | 5743 | 2538 | 3879 |
| 7624 | Ontario Hydro Energy | | 8091 | 6958 | 2538 | 3879 |
| 4545 | Ontario Research Center for Computer Algebra |  | 5048 | 2688 | 2538 | 3879 |
| 939 | Onze Lieve Vrouw Hospital | | 2588 | 1519 | 1403 | 1545 |
| 4351 | Oregon Clinic | | 4304 | 2446 | 2538 | 3879 |
| 4142 | Oregon College of Oriental Medicine | | 4017 | 2300 | 2521 | 3879 |
| 3110 | Oregon Institute of Science and Medicine | | 6107 | 741 | 2538 | 3879 |
| 746 | Oregon Research Institute | | 4596 | 1337 | 346 | 1380 |
| 1624 | Oregon Social Learning Centre | | 4795 | 3258 | 1957 | 1891 |
| 7376 | Orenburg Scientific Center UB RAS / Оренбургский научный центр Уральского отделения РАН | | 7470 | 6811 | 2538 | 3879 |
| 6930 | Orentreich Foundation for Advancement of Science | | 6922 | 6151 | 2538 | 3879 |
| 1956 | Organic and Physical Chemistry Institute A E Arbuzov Kazan Scientific Center RAS / Институт органической и физической химии им А Е Арбузова Казанского научного центра РАН | | 3736 | 4722 | 1728 | 1873 |
| 88 | Organisation for Economic Co-operation and Development |  | 125 | 9 | 410 | 1210 |
| 1555 | Organización Europea para la Investigación Astronómica en el Hemisferio Austral ESO | | 6510 | 3566 | 2538 | 596 |
| 1739 | Organización Nacional de Trasplantes | | 1801 | 1097 | 2538 | 2653 |
