Former members
- Geneviève Arboit, former MSc student, Université de Montréal (supervisor: David Lafrenière)
- Simon-Gabriel Beauvais, former MSc student, Université de Montréal (supervisor: René Doyon)
- David Berardo, PhD student, former MSc student at Université McGill (supervisor: Andrew Cumming)
- Sandie Bouchard, former PhD student at Université de Montréal, supervisor: René Doyon
- Ryan Cloutier, former PhD student, University of Toronto and Université de Montréal (co-supervisors : Kristen Menou et René Doyon)
- Simon Coudé, former PhD student at Université de Montréal, (supervisor: Pierre Bastien)
- Marie-Eve Desrochers, former MSc student, Université de Montréal (supervisor : René Doyon)
- Maude Fortin-Archambault, former MSc student, Université de Montréal (directeur : Patrick Dufour)
- Claire Guimond, previously MSc student, McGill University (supervisor: Nicolas Cowan)
- Olivier Hernandez, iREx Founding member, former iREx Coordinator, former Director of operations of the Observatoire du Mont-Mégantic, now Director at the Planétarium Rio Tinto
- Prashansa Gupta, former MSc student, Université de Montréal (supervisor : Björn Benneke)
- Robert Lamontagne, iREx Founding member, former Director of the Observatoire du Mont-Mégantic
- Olivier Roy-Loubier, previously MSc student at Université de Montréal, supervisor: René Doyon
- Joel Schwartz, previously postdoctoral researcher, Université McGill
- Holly Sheets, previously Trottier post-doctoral fellow at McGill University
- Lauren Weiss, previously Trottier post-doctoral fellow at Université de Montréal
- Julien Rameau, previously post-doctoral researcher at Université de Montréal