The 2003 IIHF World U20 Championship, commonly referred as the 2003 World Junior Hockey Championships (2003 WJHC), was the 27th edition of the Ice Hockey World Junior Championship. The tournament was held in Halifax and Sydney, Nova Scotia, Canada, from December 26, 2002, to January 5, 2003. Russia won the gold medal for the second consecutive year with a 3–2 victory over Canada in the championship game, while Finland won the bronze medal with a 3–2 victory over the United States. Playoff round (again) reverted to six teams qualifying, with group leaders getting a bye into the semifinals.

Venues

Rosters

Top Division

Preliminary round

Group A

All times local (AST/UTC-4).

Group B

All times local (AST/UTC-4).

Relegation round

Results from games played during the preliminary round were carried forward to the relegation round. All times local (AST/UTC-4).

Playoff round

Source:

Quarterfinals

Semifinals

5th place game

Bronze medal game

Final

Scoring leaders

Goaltending leaders

Minimum 40% of team's ice time.

Tournament awards

Final standings

Division I

The Division I championships were played on December 27, 2002 – January 2, 2003 in Almaty, Kazakhstan (Group A), and on December 16–22, 2002 in Bled, Slovenia (Group B).

Group A

Group B

Division II

The Division II championships were played on January 6–12, 2003, in Miercurea-Ciuc, Romania (Group A), and on December 28, 2002 – January 3, 2003 in Novi Sad, Federal Republic of Yugoslavia (Group B).

Group A

Group B

Division III

The Division III championship was played on January 21–26, 2003 in İzmit, Turkey.