• Organizing Committee, Conference on Antarctic subglacial lake exploration, March 2015. Theo Murphy meeting, Chicheley Hall, UK. J. Priscu.
• Organizing Committee, 6th International Conference on Polar and Alpine Microbiology, September 2015. České Budějovice, Czech Republic. J. Priscu.
• Organizer and chair of the 5th International Conference on Polar and Alpine Microbiology, September 2013, Big Dky, Montana. J. Priscu.
• Co-Director. 2011-present. Center for Astrobiology. Montana State University. J. Priscu.
• Co-chair of the scientific international organizing committee for the SCAR Open Science Conference, August 2010, Buenos Aries, Argentina, August 2010. J. Priscu.
• Session Organizer and Chair, "The Goldman Legacy: The Importance of Long-Term Phytoplankton Productivity Data." Aquatic Sciences: Global Changes. Joint Meeting with ASLO & NABS, Santa Fe, NM, USA. June, 2010. J. Priscu.
• Executive Committee/Chief Scientist, Whillans Ice Stream Subglacial Access Research Drilling (WISSARD) project. 2009-present. J. Priscu.
• Polar Research Board-National Academy of Science. 2009-2012. J. Priscu.
• Executive Committee, WAIS Divide Ice Coring Project. 2008-present. J. Priscu.
• Committee on the Origin and Evolution of Life -National Academy of Science. 2008-2011. J. Priscu.
• Search Committee for the Editor-in-Chief of the AGU publication JGR-Biogeosciences. 2008-2009. J. Priscu.
• Chair, SCAR-SALE (Subglacial Antarctic Lake Environments) Scientific Planning Group. 2007-present. J. Priscu.
• Co-Director. 2007-present. Subzero Research Facility, Montana State University. J. Priscu.
• Editorial Board. Astrobiology. 2006-present. J. Priscu.
• Organizing Committee, Subglacial Antarctic Lake Exploration (SALE) Advanced Science and Technology Workshop, April 24-28, 2006. LGGE, Grenoble France. J. Priscu.
• National Academy of Sciences NRC Committee "Forward Contamination of Mars." 2004-2006. J. Priscu.
• Organizing Committee, American Society of Limnology and Oceanography winter meeting, Salt Lake City. February 2003. J. Priscu.
• National Academy of Sciences NRC Committee "Frontiers in Polar Research". 2002-2003. J. Priscu.
• Participant and discussion leader, National Science Foundation Workshop "Emerging Research Questions for Limnology: The Study of Inland Waters. December 2002. J. Priscu.
• Participant and raporteur, American Society of Limnology and Oceanography/NSF funded workshop on Emerging Issues in Limnology. Boulder, CO. December 2002.J. Priscu.
• Organizing Committee, NSF funded FASTDRILL workshop. October 2002. J. Priscu.
• United States Ice Core Working Group member. 2002-2008. J. Priscu.
• Advisory Committee for the United States Ice Core Drilling Services. 2002- 2008. J. Priscu.
• Convener for the international Group of Specialists to plan the exploration of Lake Vostok and other subglacial lakes. 2000-2006. J. Priscu.
• United States Biology representative to the Scientific Committee of Antarctic Research (SCAR). 2000-2006. J. Priscu.
• National Science Foundation Office Advisory Committee for the Office of Polar Programs. 2000-2002. J. Priscu.
• National Science Foundation Advisory Committee for Environmental Research and Education 2000-2002. J. Priscu.
• Review Committee, Public Radio Documentary Series "The DNA Files". 2000- 2001. J. Priscu.
• Sponsor for the NASA Planetary Biology Internship Program. 2000-present. J. Priscu.
• NSF Review Panel, Life in Extreme Environments (LExEn) Program. 1999. J. Priscu.
• Chairperson, Winter Research in Antarctica Workshop. 7-9 September 1999. NSF headquarters, Arlington Virginia. Funded by NSF. J. Priscu.
• Sponsor for NASA GSRP and Space Grant Consortium students. 1997-present. J. Priscu.
• Sponsor for NASA Montana Space Grant Consortium students. 1996-present. J. Priscu.
• Chairperson, McMurdo (Antarctica) Area Scientific Users Committee 1995-present. J. Priscu.
• Organizing Committee and Working Group Chairman, Environmental Management Workshop on the McMurdo Dry Valleys (Antarctica). 14-17 March 1995, Sante Fe, New Mexico. Funded by NSF. J. Priscu.
• Editorial Board, American Geophysical Union, Antarctic Research Series. 1993-2002. J. Priscu.
• NSF Review Panel, Division of Polar Biology and Medicine 1990, 1993. J. Priscu.
• Editorial Board, Limnology and Oceanography. 1988-1991. J. Priscu.