- Babes-Bolyai University [Cluj-Napoca]
- Ball Aerospace and Technologies Corp.
- Ball Aerospace and Technology Corp.
- Bangalore University
- Bangor University
- Banner Lane
- Barbados Coast Guard
- Barcelona Expert Centre
- Barcelona Supercomputing Center - Centro Nacional de Supercomputacion
- Bard College
- Battel Engineering, Inc.
- Bay Area Environmental Research Institute
- Bayerisches Geoinstitut
- Bc Scientific Consulting LLC
- Bear Fight Center
- Beihang University
- Beijing Climate Centre
- Beijing Municipal Bureau of Land and Resources [Beijing]
- Beijing Municipal Environmental Monitoring Center
- Beijing Normal University
- Beijing University of Aeronautics and Astronautics
- Belarusian State University
- Belgian Institute for Space Aeronomy | Institut d'Aéronomie Spatiale de Belgique
- Belgisch Instituut voor Ruimte-Aëronomie
- Ben-Gurion University of the Negev
- Bergische Universität Wuppertal
- Berkeley Geochronology Center
- Bermuda Institute of Ocean Sciences
- Big Bear Solar Observatory
- Bigelow Laboratory for Ocean Sciences
- Big Head Endian LLC
- Biogéochimie et écologie des milieux continentaux
- Biogéochimie-Traceurs-Paléoclimat
- Biogéosciences [UMR 6282]
- Biologia Marina i Oceanografia [Barcelona]
- Biological and Environmental Sciences [Stirling]
- Biologie des Organismes et Ecosystèmes Aquatiques
- Biomedical Research Foundation of the Academy of Athens
- Birkbeck College [University of London]
- Birkeland Centre for Space Science
- Birmingham City University
- B. I. Stepanov Institute of Physics [Minsk]
- Bjerknes Centre for Climate Research
- BK Scientific GmbH
- Blackett Laboratory
- Blue Marble Space Institute of Science
- Bodeker Scientific
- Boeing Research and Technology Europe
- Boǧaziçi üniversitesi = Boğaziçi University [Istanbul]
- Bolin Centre for Climate Research
- Bombardier Aerospace
- Bosscha Observatory
- Boston College
- Boston University [Boston]
- BOWEN|NOVIMET
- Brandeis University
- Brandenburg University of Technology [Cottbus – Senftenberg]
- Brigham Young University
- Brimrose Technology Corp.
- British Antarctic Survey
- British Astronomical Association
- British Geological Survey
- British Geological Survey [Edinburgh]
- Brockmann Consult
- Brock University [Canada]
- Brookhaven National Laboratory [Upton, NY]
- Brown University
- Bruker
- Bruker Daltonics
- Bryan Scientific Consulting
- Bryan Scientific Consulting LLC
- Bucknell University
- Budapest University of Technology and Economics [Budapest]
- Bulgarian Academy of Sciences
- Bundesamt für Eich- und Vermessungswesen [Wien]
- Bundesanstalt für Geowissenschaften und Rohstoffe
- Bureau de Recherches Géologiques et Minières
- Bureau des Longitudes
- Bureau International des Poids et Mesures
- Bureau Veritas Marine & Offshore
- BWX Technologies Inc.
- Byurakan Astrophysical Observatory