Iraqi insurgency — ongoing warfare in mainly central Iraq, which began after the 2003 invasion of Iraq

2003 CONCACAF Gold Cup — 2003 edition of the association football competition CONCACAF Gold Cup

2003 in film — overview of film-related events during 2003

2003 Rugby World Cup — 5th Rugby World Cup

Eurovision Song Contest 2003 — 48th edition of the Eurovision Song Contest

2003 FIFA Women's World Cup — 2003 edition of the FIFA Women's World Cup

Rose Revolution — 2003 popular uprising against corrupt leadership in Georgia

2003 FIFA Confederations Cup — 6th FIFA Confederations Cup, held in France

2003 Formula One World Championship — Motorsport competition

2003 World Championships in Athletics — 2003 edition of the World Championships in Athletics

2003 European heat wave — heat wave leading to record-breaking temperatures in Europe during mid 2003