The annual International Conference on Medievalism (ICOM; known as the General Conference on Medievalism until 1993) began with two meetings at the University of Notre Dame in 1986 and 1987. Subsequent conferences were organized through:

• The Newberry Library and Northeastern Illinois University (Chicago, Illinois, 1988)
• the United States Military Academy (West Point, New York, 1989)
• Burg Kaprun (jointly with the 5th Symposium on Mittelalter-Rezeption, Austria, 1990)
• The University of Delaware (Newark, Delaware, 1991)
• The University of South Florida (Tampa, Florida, 1992)
• The University of Leeds (UK, 1993)
• Montana State University (Bozeman, Montana, 1994)
• The Higgins Armory Museum (Worcester, Massachusetts, 1995)
• Kalamazoo College (Kalamazoo, Michigan, 1996)
• Christ Church University College (Canterbury, UK, 1997)
• University of Rochester (Rochester, New York, 1998)
• Montana State University (Bozeman, Montana, 1999)
• Hope College (Holland, Michigan: 2000)
• Buffalo State College (Buffalo, New York, 2001)
• The University of Northern Iowa (Cedar Falls, Iowa, 2002)
• St. Louis University (St. Louis, Missouri, 2003)
• University of New Brunswick (Canada, 2004)
• Towson University (Baltimore, Maryland, 2005)
• Ohio State University (Columbus, Ohio, 2006)
• University of Western Ontario (London, Ontario, Canada, 2007)
• Wesleyan College (Macon, Georgia, 2008)
• Siena College (Loudonville, New York, 2009)
• University of Groningen (The Netherlands, 2010)
• University of New Mexico (Albuquerque, New Mexico, 2011)
• Kent State University Regional Campuses (Warren and Canton, Ohio, 2012)
• St. Norbert College (De Pere, Wisconsin, 2013)
• Georgia Institute of Technology (Atlanta, Georgia, 2014)
• Washinton and Jefferson College (Pittsburgh, PA, 2015)
• Bamberg University (Bavaria, Germany, 2016)
• University of Salzburg (Salzburg, Austria, 2017)
• Brock University (St. Catharines, Ontario, Canada, 2018)
• Georgia Institute of Technology (Atlanta, Georgia, 2019)
• Old Dominion University (Norfolk, Virginia, 2020)
• Delta College (Midland, Michigan, 2021)
• Appalachian State University (Boone, North Carolina, 2022)

Additionally, ISSM usually sponsors sessions at the International Congresses on Medieval Studies (Western Michigan University; Kalamazoo, Michigan) and the International Medieval Congress at the University of Leeds (UK).