Agassiz Brewing Company was founded by former Fort Garry Brewing Brewmaster Gary De Pape. It was established in Winnipeg in late 1998 and officially opened on March 17, 1999. Agassiz was one of these microbreweries that launched in Manitoba in the late 1990s, alongside Fort Garry and Two Rivers Brewing, to produce and bottle locally made ales and lagers for the Winnipeg and Manitoba market.