Corazzin made his Canadian national team debut on June 1, 1994 in a 1–1 tie with Morocco. Corazzin scored the majority of his international goals between 1999–2000 and formed an effective striker partnership with Paul Peschisolido for Canada over the years. In 2000, Corazzin won the Golden Boot as top scorer of the CONCACAF Gold Cup with 4 goals and was named in the best XI of the tournament as Canada won the competition for the first time. Corazzin played in all of Canada's three games at the 2001 FIFA Confederations Cup. Corazzin earned 59 caps for Canada from 1994 to 2004 scoring 11 goals, ranking him tied-seventh in the all-time scoring for Canada. He has represented Canada in 23 FIFA World Cup qualification matches in three FIFA World Cup qualification campaigns (1998, 2002 and 2006) .