- UAR THETA (terre, homme, environnement, temps, astronomie)
- UCL Department of Geography
- UFR des Sciences et Technologies
- UNH Space Science Center [Durham]
- Unione Astrofili Italiani
- Unité Climat, Sol et Environnement
- Unité de bioclimatologie
- Unité de biométrie et intelligence artificielle de Jouy
- Unité de Science du Sol
- Unité de Science du Sol (Orléans)
- United Kingdom Met Office [Exeter]
- United Nations
- United Nations Environment Programme
- United States Air Force
- United States Geological Survey [Reston]
- Universidad Autónoma de Madrid
- Universidad de Buenos Aires [Buenos Aires]
- Universidad de Granada = University of Granada
- Universidad de La Laguna [Tenerife - SP]
- Universidad del País Vasco [Espainia] | Euskal Herriko Unibertsitatea [España] = University of the Basque Country [Spain] = Université du pays basque [Espagne]
- Universidad de Magallanes
- Universidade de Aveiro
- Universidade de Évora = University of Évora [Portugal]
- Universidade de Lisboa = University of Lisbon = Université de Lisbonne
- Universidade do Porto = University of Porto
- Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University
- Universidad Metropolitana de Ciencias de la Educación
- Universidad Nacional Autónoma de México = National Autonomous University of Mexico
- Universidad Nacional de Costa Rica
- Universidad Nacional de Rosario [Santa Fe]
- Universidad Nacional de San Luis [San Luis]
- Universidad Nacional de San Martin
- Universidad Politécnica de Madrid
- Università degli studi della Basilicata = University of Basilicata
- Università degli Studi dell'Aquila = University of L'Aquila
- Università degli Studi di Ferrara = University of Ferrara
- Università degli Studi di Firenze = University of Florence = Université de Florence
- Università degli Studi di Padova = University of Padua
- Università degli Studi di Perugia = University of Perugia
- Università degli Studi di Roma "La Sapienza" = Sapienza University [Rome]
- Università degli Studi di Roma Tor Vergata [Roma, Italia] = University of Rome Tor Vergata [Rome, Italy] = Université de Rome Tor Vergata [Rome, Italie]
- Università degli Studi di Trento = University of Trento
- Università del Salento = University of Salento [Lecce]
- Universität Bayreuth
- Universität Bern = University of Bern = Université de Berne
- Universität Bremen [Deutschland] = University of Bremen [Germany] = Université de Brême [Allemagne]
- Universität der Bundeswehr München [Neubiberg]
- Universitat de València
- Universität Heidelberg [Heidelberg] = Heidelberg University
- Universität Hohenheim
- Universität Innsbruck [Innsbruck]
- Universität Kassel [Kassel]
- Universitat Politècnica de Catalunya = Université polytechnique de Catalogne [Barcelona]
- Universität Rostock
- Universität Wien = University of Vienna
- Universität zu Köln = University of Cologne
- Université Blaise Pascal - Clermont-Ferrand 2
- Université Bourgogne Franche-Comté [COMUE]
- Université Catholique de Louvain = Catholic University of Louvain
- Université Claude Bernard Lyon 1
- Université Côte d'Azur
- Université d'Angers
- Université de Besançon
- Université de Bordeaux
- Université de Bourgogne
- Université de Brest
- Université de Caen Normandie
- Université de Cergy Pontoise
- Université de Franche-Comté
- Université de Genève = University of Geneva
- Université de La Réunion
- Université de La Réunion - Faculté des Sciences et Technologies
- Université de Liège
- Université de Lille
- Université de Lille, Sciences et Technologies
- Université de Lorraine
- Université de Lyon
- Université de Mons | University of Mons
- Université de Montpellier
- Université de Montréal
- Université de Nantes
- Université de Nantes - UFR des Sciences et des Techniques
- Université de Perpignan Via Domitia
- Université de Poitiers = University of Poitiers
- Université de Provence - Aix-Marseille 1
- Université de Reims Champagne-Ardenne
- Université de Rennes 2
- Université de Rouen Normandie
- Université des Antilles et de la Guyane
- Université de Strasbourg
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- Université de Tours
- Université de Versailles Saint-Quentin-en-Yvelines
- Université d'Orléans
- Université du Littoral Côte d'Opale
- Université du Maine [Le Mans - Laval]
- Université du Québec à Montréal = University of Québec in Montréal
- Université Grenoble Alpes [2016-2019]
- Université Henri Poincaré - Nancy 1
- Universiteit Leiden = Leiden University
- Universiteit Utrecht | Utrecht University [Utrecht]
- Université Jean Monnet - Saint-Étienne
- Université Joseph Fourier - Grenoble 1
- Université Laval [Québec]
- Université libre de Bruxelles
- Université Louis Pasteur - Strasbourg I
- Université Montpellier 2 - Sciences et Techniques
- Université Nice Sophia Antipolis (1965 - 2019)
- Université Paris 1 Panthéon-Sorbonne
- Université Paris Cité
- Université Paris Diderot - Paris 7
- Université Paris-Est Créteil Val-de-Marne - Paris 12
- Université Paris-Saclay
- Université Paris Saclay (COmUE)
- Université Paris Sciences et Lettres
- Université Paris-Seine
- Université Paris-Sorbonne
- Université Paris-Sud,
- Université Paris-Sud - Paris 11
- Université Paul Cézanne - Aix-Marseille 3
- Université Pierre et Marie Curie - Paris 6
- Université Savoie Mont Blanc
- Université Sciences et Technologies - Bordeaux 1
- Université Toulouse III - Paul Sabatier
- Universities Space Research Association [Washington]
- University at Albany [SUNY]
- University College of London [London]
- University Corporation for Atmospheric Research
- University of Adelaide
- University of Alabama at Birmingham [ Birmingham]
- University of Alabama in Huntsville
- University of Alaska [Fairbanks]
- University of Amsterdam [Amsterdam] = Universiteit van Amsterdam
- University of Arizona
- University of Balamand [Liban]
- University of Birmingham [Birmingham]
- University of Bristol [Bristol]
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- University of Cambridge [UK]
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- University of Cologne
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- University of Crete [Heraklion]
- University of Denver
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- University of Edinburgh
- University of Exeter
- University of Florida [Gainesville]
- University of Hawai'i [Honolulu]
- University of Hawai‘i [Mānoa]
- University of Hohenheim
- University of Idaho [Moscow, USA]
- University of Illinois at Urbana-Champaign [Urbana]
- University of Illinois System
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- University of Kansas [Lawrence]
- University of Kent [Canterbury]
- University of KwaZulu-Natal [Durban, Afrique du Sud]
- University of L'Aquila [Italy]
- University of Leeds
- University of Leicester
- University of Ljubljana
- University of London [London]
- University of Manchester Institute of Science and Technology
- University of Manchester [Manchester]
- University of Maryland [Baltimore]
- University of Maryland [Baltimore County]
- University of Maryland Biotechnology Institute
- University of Maryland [College Park]
- University of Maryland System
- University of Mary Washington
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- University of Massachusetts System
- University of Miami [Coral Gables]
- University of Michigan [Ann Arbor]
- University of Michigan System
- University of Minnesota System
- University of Minnesota [Twin Cities]
- University of Naples Federico II = Università degli studi di Napoli Federico II
- University of New Hampshire
- University of New South Wales [Sydney]
- University of North Dakota [Grand Forks]
- University of Oslo
- University of Oulu
- University of Oxford
- University of Pittsburgh
- University of Potsdam = Universität Potsdam
- University of Reading
- University of Rhode Island
- University of Salford
- University of Saskatchewan [Saskatoon, Canada]
- University of Sheffield [Sheffield]
- University of Southampton
- University of Southern California
- University of St Andrews [Scotland]
- University of Strathclyde [Glasgow]
- University of Sussex
- University of Texas at Austin [Austin]
- University of Texas at Dallas [Richardson]
- University of Toledo
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- University of Tromsø
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- University of Wales
- University of Washington [Seattle]
- University of Waterloo [Waterloo]
- University of Western Ontario
- University of Wisconsin-Madison
- University of Wollongong [Australia]
- University of Wuppertal
- University of Wyoming
- University of York [York, UK]
- Univers, Théorie, Interfaces, Nanostructures, Atmosphère et environnement, Molécules (UMR 6213)
- UPMC - Département de Géologie Sédimentaire
- Uppsala Astronomical 0bservatory
- Uppsala University
- US Air Force Academy
- USC Space Science Center
- U.S. Department of Energy [Washington]
- US Geological Survey [Flagstaff]
- Utah State University
- UT-Battelle, LLC