The 2003 Men's Ice Hockey World Championships was the 67th such event sanctioned by the International Ice Hockey Federation (IIHF).
Canada won the gold medal, beating Sweden 3–2 in the final.
France and Kazakhstan were promoted to the 2004 Men's World Ice Hockey Championships, while Croatia and Lithuania were demoted to Division II.
Played in Seoul, South Korea (April 5–12).
Luxembourg and New Zealand were promoted to Division II.