- Halle Jena Leipzig
- Halu Oleo University
- HARBIN NORMAL UNIVERSITY HEILONGJIANG CHN
- Helenic Centre for Marine Research
- Hellenic Centre for Marine Research
- Helmholtz Center, Leipzig, Germany, SC
- Helmholtz-Gemeinschaft = Helmholtz Association
- Helmholtz Zentrum für Umweltforschung = Helmholtz Centre for Environmental Research
- Helsingin yliopisto = Helsingfors universitet = University of Helsinki
- Helsinki Institute of Life Science
- Helsinki University Hospital [Finland]
- Herschel Science Centre
- Hólar University
- Hólar University College
- Hôpital Sainte-Marguerite [CHU - APHM]
- HUNGARIAN ACADEMY OF SCIENCES DANUBE RESEARCH INSTITUTE GOD HUN
- HYDRECO
- Hydrobiologie
- Hydrobiologie et Fonctionnement des Ecosystèmes
- HYDROBIOLOGY STATION VILAGARCIA DE AROUSA ESP
- Hydrologie-Hydraulique
- HYDRO REUNION ETANG SALE FRA
- Hydrosciences Montpellier
- Hydrosystèmes continentaux anthropisés : ressources, risques, restauration
- Hydrosystèmes et Bioprocédés
- HYNES