Abstract: Research suggests that there is an increase in alcohol and cannabis use during the COVID- 19 pandemic (Canada, 2020; Statistics Canada, 2020). In Canada, reports on the degree of this increase vary, ranging from 19 to 28% reporting an increase in alcohol use and 6–29% reporting an increase in cannabis use (Mental Health Research Canada, 2020; NANOS Research, 2020; Statistics Canada, 2020). While such statistics are concerning, several important gaps remain regarding the impact of the COVID-19 pandemic on substance use.