| | - Albert Einstein College of Medicine
| Nov 2017 - Nov 2023 |
| | - Niels Bohr Institutet, Københavns Universitet
| Mar 2007 - Feb 2009 |
| | - Dept. of Geological Sciences, Cornell University
| Jan 2003 - Jan 2006 |
- Benedict, Jason
- APSUO ex-officio
| | - State University of New York @ Buffalo
| May 2016 - May 2017 |
| | - Advanced Analytical Center for Environmental Sciences, University of Georgia
| Jan 2003 - Jan 2007 |
- Birnbaum, Howard, (deceased)
| | - Materials Research Laboratory, University of Illinois at Urbana-Champaign
| Jan 2003 - Jan 2005 |
- Brown, Donald
- APSUO ex-officio
| | - Los Alamos National Laboratory
| Nov 2015 - Jun 2016 |
| | - Oak Ridge National Laboratory
| Feb 2007 - Feb 2009 |
| | - Dept. of Physics and Applied Physics, Stanford University
| Jun 2009 - Nov 2014 |
| | - Pacific Northwest National Laboratory
| Apr 2018 - Nov 2020 |
- Capel, Malcolm
- PUC, ex officio
| | | Feb 2015 - Jun 2021 |
| | - Dept. of Materials Science and Engineering, Lehigh University
| Feb 2006 - Feb 2008 |
- Chappaz, Anthony
- APSUO, ex officio
| | - Central Michigan University
| Oct 2021 - Oct 2022 |
| | | Apr 2020 - Nov 2022 |
- Clarke, Amy
- APSUO, ex-officio
| | | May 2017 - May 2018 |
| | - Lawrence Berkeley National Laboratory
| Nov 2009 - Mar 2014 |
| | - Lawrence Berkeley National Laboratory
| Nov 2015 - Apr 2018 |
| | - Bristol-Myers Squibb (retired)
| Feb 2006 - Jan 2012 |
| | - Dept. of Materials Science and Engineering, Northwestern University
| Feb 2005 - Jan 2007 |
| | - ESRF - The European Synchrotron
| Nov 2014 - Apr 2017 |
| | - SLAC National Accelerator Laboratory
| Apr 2020 - Nov 2022 |
| | - National Institute of Standards and Technology
| Feb 2007 - May 2007 |
| | - Lawrence Berkeley National Laboratory
| Apr 2021 - Nov 2022 |
| | | Nov 2018 - Apr 2024 |
| | - Argonne National Laboratory
| Nov 2015 - Apr 2018 |
| | - Stanford Synchrotron Radiation Laboratory
| Feb 2009 - Nov 2015 |
| | - Dept. of Chemistry, University of Manchester
| Jan 2003 - Jan 2007 |
| | - Dept. of Biochemistry & Molecular Biophysics, Columbia University
| Jan 2003 - Jan 2005 |
| | - Dept. of Pathology, Duke University Medical Center
| Jan 2003 - Jan 2006 |
| | - The Scripps Research Institute
| Jan 2012 - Mar 2016 |
| | - Dept. of Biochemistry, University of Oxford
| Mar 2009 - Feb 2011 |
| | - European Spallation Source
| Nov 2018 - Apr 2024 |
| | - T.J. Watson Research Center, IBM
| Ma 2013 - Nov 2018 |
| | - Advanced Light Source, Lawrence Berkeley National Laboratory
| Feb 2009 - Nov 2017 |
| | - Dept. of Physics, University of Illinois at Urbana-Champaign
| May 2007 - Feb 2011 |
- Kline, Joseph
- APSUO, ex-officio
| | - National Institute of Standards and Technology
| May 2018 - May 2019 |
| | | Nov 2014 - Nov 2016 |
| | - E.I. DuPont du Nemours & Company
| Feb 2010 - Jun 2015 |
| | - National Institutes of Health
| Feb 2006 - Feb 2008 and Apr 2022- Nov 2024 |
| | - The University of Chicago
| Jan 2010 - Mar 2016 |
| | - National Institute of Standards and Technology (NIST)
| Nov 2017 -Nov 2022 |
| | | Nov 2017 - Apr 2020 |
| | - Environmental Molecular Sciences Laboratory
| Nov 2020 - Nov 2021 |
| | - Diamond Light Source Ltd.
| Jan 2003 - Jan 2006 |
| | - Brookhaven National Laboratory (retired)
| Jan 2003 - Jan 2007 |
| | - T.J. Watson Research Center, IBM
| Nov 2018 - Apr 2024 |
- Mejia, Michelle
- APSUO, ex officio
| | | Oct 2022 - May 2024 |
| | - National Institute of Standards and Technology
| May 2007 - Jun 2015 |
| | - Dept. of Chemistry, The University of Chicago
| Jan 2003 - Jan 2006 |
| | - College of Engineering, University of Wisconsin-Madison
| Jan 2003 - Jan 2005 |
- Penner-Hahn, James, Chair (starting 4/2019)
| | | Mar 2016 - Nov 2022 |
| | - Stanford Synchrotron Radiation Laboratory
| Feb 2006 - Jan 2009 |
| | | Apr 2019 - Nov 2021 |
| | - The University of Chicago
| Jan 2012 - Feb 2015 |
| | - National Institute of Standards and Technology (retired)
| Jan 2003 - Jan 2007 |
| | - Stanford Linear Accelerator Center
| Nov 2014 - Apr 2017 |
| | | Nov 2021 - Nov 2023 |
- Segre, Carlo
- APSUO, ex-officio
| | - Illinois Institute of Technology
| May 2019 - May 2020 |
| | - Lawrence Berkeley National Laboratory
| Apr 2018 - Nov 2021 |
| | - University of California, San Diego
| Nov 2014 - Apr 2020 |
| | - University of California, San Diego
| Nov 2014 - Apr 2017 |
| | | Feb 2009 - Nov 2013 |
| | - Stanford Synchrotron Radiation Laboratory
| Jan 2003 - Jan 2006 |
| | | Oct 2011 - Nov 2019 |
| | | Jan 2003 - Jan 2005 |
| | - SLAC National Accelerator Laboratory
| Nov 2017 - Apr 2020 |
| | | Nov 2009 - Jun 2014 |
| | - SLAC National Accelerator Laboratory
| Feb 2008 - Nov 2014 |
| | - Earth Sciences Division, Lawrence Berkeley National Laboratory
| Feb 2007 - Mar 2013 |
| | | Feb 2006 - Jan 2008 |
| | - Dept. of Earth and Space Sciences, State University of New York, Stony Brook
| Feb 2006 - Jan 2009 |
| | - Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign
| Jan 2003 - Jan 2008 |
| | - Johns Hopkins University School of Medicine
| Nov 2016 - Apr 2019 |
| | - Northwestern University
- Oncology
| Nov 2018 - Apr 2023 |
| | - Laboratory of Molecular Biology, National Institutes of Health
| Feb 2007 - Jan 2009 |
- Zhang, Fan
- APSUO, ex officio
| | - National Institute of Standards and Technology
| May 2020 - May 2021 |