A top prospect with the Waterloo Black Hawks of the United States Hockey League (USHL), Boeser was selected 23rd overall in the 2015 NHL Entry Draft by the Canucks and spent the following two seasons with the University of North Dakota. He made his NHL debut in 2017 with Vancouver. Internationally, Boeser has played for the United States national junior team at the 2016 World Junior Championships, where he helped the team win a bronze medal.