Lacrosse
- Victoria Shamrocks win the Mann Cup.
- St. Catharines Athletics win the Minto Cup
- In May, Canada wins the first World Indoor Lacrosse Championship, defeating the Iroquois Nation in the final by a score of 21-4.
- The Toronto Rock win the Champion's Cup over the Rochester Knighthawks.
- The Long Island Lizards win the Steinfeld Cup over the Baltimore Bayhawks.
- Amherst College Women's Lacrosse team defeats Middlebury College to win the Division III National Championship, 11-9.
Read more about this topic: 2003 In Sports