Members with the Letter J
- Jabor, Antonin -- Czech Republic -- Hospital Kladno
- Jackson, Nancy -- United States -- Sandia National Laboratories
- Jacobs, Helen -- Jamaica -- University of the West Indies (UWI)
- Jacquemin, Johan -- United Kingdom -- University of Belfast
- Jacques, Bernard -- France -- ELF Atochem, S.A.
- Jaen, Juan -- United States -- Tularik, Inc.
- Jafelicci, Miguel -- Brazil -- Universidade Estadual Paulista
- Jaffe, Michael -- United States -- New Jersey Institute of Technology
- Jaimini, Nirupama -- India -- University of Delhi
- Jain, Vimal -- India -- Bhabha Atomic Research Centre
- Jain, Dharam -- India -- Panjab University
- Jakubowski, Marek -- Poland -- Institute of Occupational Medicine
- Jalkanen, Liisa -- Switzerland -- World Meteorological Organization/AREP
- James, David -- United Kingdom -- Royal Society of Chemistry
- Janca, Josef -- Czech Republic -- Academy of Sciences of the Czech Republic
- Jandera, Pavel -- Czech Republic -- Univerzita Pardubice
- Jane, Jay-Lin -- United States -- Iowa State University
- Janes, Robert -- United Kingdom -- Queen Mary, University of London
- Janoschek, Rudolf -- Austria -- Karl-Franzens-Universität Graz
- Jansova, Linda -- Czech Republic
- Japas, L. -- Argentina -- Comisión Nacional de Energía Atómica
- Jardim, Maria -- Portugal -- Universidade de Lisboa
- Jaroch, Stefan -- Germany -- Schering AG
- Jarosz, Maciej -- Poland -- Warsaw University of Technology
- Jaspars, Marcel -- United Kingdom -- University of Aberdeen
- Jeannin, Yves -- France
- Jenkin, M. E. -- United Kingdom -- Imperial College
- Jenkins, Aubrey -- United Kingdom
- Jenkins, Jeffrey -- United States -- Oregon State University
- Jenouvrier, Alain -- France -- Université de Reims Champagne-Ardenne