| Others – Bille Jean King Cup | 2003 |  | 26 April–23 November |
| World Cup – Men – Slalom – Park City | 2004 | | 23 November |
| World Cup – Results (Final) | 2003 | | 22 November |
| World Cup – Men – Giant slalom – Park City | 2004 | | 22 November |
| World Cup – Results | 2003 | | 10 October–22 November |
| Ultimate Fighting Championship – Men – Welterweight | 2003 | | 21 November |
| World Cup – Results (Third place game) | 2003 | | 20 November |
| ATP Tour – ATP Tour Finals – Men's singles | 2003 | | 16 November |
| World Cup – Results (Semifinal #2) | 2003 | | 16 November |
| World Cup – Results (Semifinal #1) | 2003 | | 15 November |
| WTA Tour – WTA Finals – Women's singles | 2003 | | 9 November |
| World Rally Championship (WRC) – Rallies – Rally GB (Wales) | 2003 | | 6–9 November |
| World Cup – Results (Quarterfinal #4) | 2003 | | 9 November |
| World Cup – Results (Quarterfinal #3) | 2003 | | 9 November |
| World Cup – Results (Quarterfinal #2) | 2003 | | 8 November |
| World Cup – Results (Quarterfinal #1) | 2003 | | 8 November |
| World Marathon Majors – New York Marathon – Men | 2003 | | 5 November |
| World Marathon Majors – New York Marathon – Women | 2003 | | 5 November |
| World Cup – Results (Pool D) | 2003 | | 2 November |
| World Cup – Results (Pool C) | 2003 | | 2 November |
| ATP Tour – ATP Masters 1000 – Paris | 2003 | | 2 November |
| World Cup – Results (Pool C) | 2003 | | 1 November |
| World Cup – Results (Pool A) | 2003 | | 1 November |
| World Cup – Results (Pool B) | 2003 | | 1 November |
| World Cup – Results (Pool B) | 2003 | | 31 October |
| World Cup – Results (Pool A) | 2003 | | 30 October |
| World Cup – Results (Pool D) | 2003 | | 29 October |
| World Cup – Results (Pool C) | 2003 | | 28 October |
| World Cup – Results (Pool B) | 2003 | | 27 October |
| World Cup – Results (Pool A) | 2003 | | 26 October |
| World Cup – Results (Pool C) | 2003 | | 26 October |
| World Cup – Men – Giant slalom – Sölden | 2004 | | 26 October |
| World Rally Championship (WRC) – Rallies – Rally Spain (Catalunya) | 2003 | | 24–26 October |
| World Cup – Results (Pool D) | 2003 | | 25 October |
| World Cup – Results (Pool B) | 2003 | | 25 October |
| World Cup – Results (Pool A) | 2003 | | 25 October |
| World Cup – Women – Giant slalom – Sölden | 2004 | | 25 October |
| World Cup – Results (Pool D) | 2003 | | 24 October |
| World Cup – Results (Pool C) | 2003 | | 24 October |
| World Cup – Results (Pool B) | 2003 | | 23 October |
| World Cup – Results (Pool A) | 2003 | | 22 October |
| World Cup – Results (Pool D) | 2003 | | 21 October |
| World Cup – Results (Pool B) | 2003 | | 20 October |
| European Tour – World Match Play Championship | 2003 | | 19 October |
| World Cup – Results (Pool A) | 2003 | | 19 October |
| ATP Tour – ATP Masters 1000 – Madrid | 2003 | | 19 October |
| World Cup – Results (Pool C) | 2003 | | 19 October |
| World Cup – Results (Pool D) | 2003 | | 19 October |
| World Rally Championship (WRC) – Rallies – Rally France (Tour de Corse) | 2003 | | 17–19 October |
| UCI World Tour – Giro di Lombardia | 2003 | | 18 October |
| World Cup – Results (Pool B) | 2003 | | 18 October |
| World Cup – Results (Pool C) | 2003 | | 18 October |
| World Cup – Results (Pool A) | 2003 | | 18 October |
| World Cup – Results (Pool D) | 2003 | | 17 October |
| World Cup – Results (Pool C) | 2003 | | 15 October |
| World Cup – Results (Pool D) | 2003 | | 15 October |
| World Cup – Results (Pool B) | 2003 | | 15 October |
| World Cup – Results (Pool A) | 2003 | | 14 October |
| World Cup – Women – Results | 2003 | | 20 September–12 October |
| World Championships – Men – Road race | 2003 | | 12 October |
| World Cup – Women – Results (Final) | 2003 | | 12 October |
| World Cup – Results (Pool C) | 2003 | | 12 October |
| World Cup – Results (Pool D) | 2003 | | 12 October |
| Formula 1 – Grand Prix – Japanese Grand Prix | 2003 | | 12 October |
| World Cup – Results (Pool B) | 2003 | | 12 October |
| World Cup – Results (Pool D) | 2003 | | 11 October |
| World Cup – Results (Pool B) | 2003 | | 11 October |
| World Cup – Results (Pool C) | 2003 | | 11 October |
| World Cup – Results (Pool A) | 2003 | | 11 October |
| World Cup – Results (Pool A) | 2003 | | 10 October |
| World Championships – Men – Time trial | 2003 | | 9 October |
| World Championships – Women – Time trial | 2003 | | 8 October |
| World Championships – Women – Road race | 2003 | | 7 October |
| Others – Paris-Tours | 2003 | | 5 October |
| World Rally Championship (WRC) – Rallies – Rally San Remo | 2003 | | 3–5 October |
| World Marathon Majors – Berlin Marathon – Women | 2003 | | 28 September |
| UCI World Tour – Vuelta a España – General standings | 2003 | | 28 September |
| World Marathon Majors – Berlin Marathon – Men | 2003 | | 28 September |
| Formula 1 – Grand Prix – United States Grand Prix (East) | 2003 | | 28 September |
| Ultimate Fighting Championship – Men – Heavyweight | 2003 | | 26 September |
| Ultimate Fighting Championship – Men – Light-heavyweight | 2003 | | 26 September |
| World Championship – Men – Heavyweight | 2003 | | 20 September |
| Continental championships – Europe – Men | 2003 | | 14 September |
| Formula 1 – Grand Prix – Italian Grand Prix | 2003 | | 14 September |
| Continental championships – Europe – Men | 2003 | | 14 September |
| World Rally Championship (WRC) – Rallies – Rally Australia | 2003 | | 4–7 September |
| World Championships – Women – 1500 m | 2003 | | 31 August |
| World Championships – Women – Marathon | 2003 | | 31 August |
| World Championships – Women – 4x400 m | 2003 | | 31 August |
| World Championships – Men – 800 m | 2003 | | 31 August |
| World Championships – Men – 4x400 m | 2003 | | 31 August |
| World Championships – Men – 4x100 m | 2003 | | 31 August |
| World Championships – Women – High jump | 2003 | | 31 August |
| World Championships – Men – 5000 m | 2003 | | 31 August |
| World Championships – Men – Javelin throw | 2003 | | 31 August |
| World Championships – Men – 110 m hurdles | 2003 | | 30 August |
| World Championships – Men – Marathon | 2003 | | 30 August |
| World Championships – Women – 4x100 m | 2003 | | 30 August |
| World Championships – Women – 5000 m | 2003 | | 30 August |
| World Championships – Women – Long jump | 2003 | | 30 August |
| World Championships – Women – Javelin throw | 2003 | | 30 August |
| World Championships – Men – 400 m hurdles | 2003 | | 29 August |
| World Championships – Men – 200 m | 2003 | | 29 August |
| Ultra-Trail du Mont-Blanc – Women | 2003 | | 29 August |
| Ultra-Trail du Mont-Blanc – Men | 2003 | | 28–29 August |
| World Championships – Men – Long jump | 2003 | | 29 August |
| World Championships – Women – 200 m | 2003 | | 28 August |
| World Championships – Women – Hammer throw | 2003 | | 28 August |
| World Championships – Women – 400 m hurdles | 2003 | | 28 August |
| World Championships – Women – 400 m | 2003 | | 27 August |
| World Championships – Women – Shot put | 2003 | | 27 August |
| World Championships – Men – 1500 m | 2003 | | 27 August |
| World Championships – Men – 50 km walk | 2003 | | 27 August |
| World Championships – Men – Decathlon | 2003 | | 26–27 August |
| World Championships – Women – 100 m hurdles | 2003 | | 27 August |
| World Championships – Men – 400 m | 2003 | | 26 August |
| World Championships – Women – Triple jump | 2003 | | 26 August |
| World Championships – Men – 3000 m steeple | 2003 | | 26 August |
| World Championships – Women – 800 m | 2003 | | 26 August |
| World Championships – Men – Discus throw | 2003 | | 26 August |
| World Championships – Women – Pole vault | 2003 | | 25 August |
| World Championships – Men – 100 m | 2003 | | 25 August |
| World Championships – Men – Hammer throw | 2003 | | 25 August |
| World Championships – Men – High jump | 2003 | | 25 August |
| World Championships – Men – Triple jump | 2003 | | 25 August |
| World Championships – Women – Discus throw | 2003 | | 25 August |
| ATP Tour – Grand Slam – US Open | 2003 | | 25 August |
| WTA Tour – Grand Slam – US Open | 2003 | | 25 August |
| World Championships – Men – 10000 m | 2003 | | 24 August |
| World Championships – Women – 20 km walk | 2003 | | 24 August |
| World Championships – Women – 100 m | 2003 | | 24 August |
| World Championships – Women – Heptathlon | 2003 | | 23–24 August |
| Formula 1 – Grand Prix – Hungarian Grand Prix | 2003 | | 24 August |
| World Championships – Men – Shot put | 2003 | | 23 August |
| World Championships – Women – 10000 m | 2003 | | 23 August |
| ATP Tour – ATP Masters 1000 – Cincinnati | 2003 | | 17 August |
| PGA Tour – Majors – PGA Championship | 2003 | | 17 August |
| Others – Championship of Zürich | 2003 | | 17 August |
| Southern hemisphere – Rugby Championship | 2003 | | 12 July–16 August |
| Southern hemisphere – Bledisloe Cup | 2003 | | 26 July–16 August |
| X Games – Vert | 2003 | | 15 August |
| World Rally Championship (WRC) – Rallies – Rally Finland | 2003 | | 7–10 August |
| ATP Tour – ATP Masters 1000 – Montreal/Toronto | 2003 | | 10 August |
| UCI World Tour – Clásica San Sebastián | 2003 | | 9 August |
| World Championships – Men – Long distance | 2003 | | 9 August |
| World Championships – Men – Middle distance | 2003 | | 9 August |
| World Championships – Men – Sprint | 2003 | | 9 August |
| World Championships – Men – Relay | 2003 | | 9 August |
| World Championships – Women – Long distance | 2003 | | 9 August |
| World Championships – Women – Middle distance | 2003 | | 9 August |
| World Championships – Women – Sprint | 2003 | | 9 August |
| World Championships – Women – Relay | 2003 | | 9 August |
| Formula 1 – Grand Prix – German Grand Prix | 2003 | | 3 August |
| UCI World Tour – Hamburg Cyclassics | 2003 | | 3 August |
| World Championships – Women – 50 m breaststroke | 2003 | | 27 July |
| World Championships – Women – 50 m freestyle | 2003 | | 27 July |
| World Rally Championship (WRC) – Rallies – Rally Germany | 2003 | | 25–27 July |
| World Championships – Men – 1500 m freestyle | 2003 | | 27 July |
| World Championships – Men – 400 m medley | 2003 | | 27 July |
| World Championships – Men – 4x100 m medley | 2003 | | 27 July |
| World Championships – Men – 50 m backstroke | 2003 | | 27 July |
| Continental cups (nations) – Gold Cup | 2003 | | 12–27 July |
| UCI World Tour – Tour de France – General standings | 2003 | | 27 July |
| World Championships – Women – 400 m medley | 2003 | | 27 July |
| World Championships – Women – 200 m backstroke | 2003 | | 26 July |
| World Championships – Men – 50 m freestyle | 2003 | | 26 July |
| World Championships – Women – 50 m butterfly | 2003 | | 26 July |
| World Championships – Women – 4x100 m medley | 2003 | | 26 July |
| World Championships – Men – 100 m butterfly | 2003 | | 26 July |
| World Championships – Women – 800 m freestyle | 2003 | | 26 July |
| World Championships – Women – 100 m freestyle | 2003 | | 25 July |
| World Championships – Men – 200 m backstroke | 2003 | | 25 July |
| World Championships – Men – 800 m freestyle | 2003 | | 25 July |
| World Championships – Men – 200 m medley | 2003 | | 25 July |
| World Championships – Women – 200 m breaststroke | 2003 | | 25 July |
| World Championships – Women – 50 m backstroke | 2003 | | 24 July |
| World Championships – Men – 100 m freestyle | 2003 | | 24 July |
| World Championships – Men – 200 m breaststroke | 2003 | | 24 July |
| World Championships – Women – 200 m butterfly | 2003 | | 24 July |
| World Championships – Women – 4x200 m freestyle | 2003 | | 24 July |
| World Championships – Men – 4x200 m freestyle | 2003 | | 23 July |
| World Championships – Men – 50 m breaststroke | 2003 | | 23 July |
| World Championships – Women – 200 m freestyle | 2003 | | 23 July |
| World Championships – Men – 200 m butterfly | 2003 | | 23 July |
| World Championships – Women – 100 m breaststroke | 2003 | | 22 July |
| World Championships – Women – 1500 m freestyle | 2003 | | 22 July |
| World Championships – Men – 200 m freestyle | 2003 | | 22 July |
| World Championships – Women – 100 m backstroke | 2003 | | 22 July |
| World Championships – Men – 100 m backstroke | 2003 | | 22 July |
| World Championships – Women – 200 m medley | 2003 | | 21 July |
| World Championships – Men – 100 m breaststroke | 2003 | | 21 July |
| World Championships – Women – 100 m butterfly | 2003 | | 21 July |
| World Championships – Men – 50 m butterfly | 2003 | | 21 July |
| Formula 1 – Grand Prix – British Grand Prix | 2003 | | 20 July |
| World Championships – Men – 400 m freestyle | 2003 | | 20 July |
| World Championships – Women – 4x100 m freestyle | 2003 | | 20 July |
| World Championships – Men – 4x100 m freestyle | 2003 | | 20 July |
| World Championships – Women – 400 m freestyle | 2003 | | 20 July |
| PGA Tour – Majors – Open Championship | 2003 | | 20 July |
| Nations League – Results | 2003 | | 13 July |
| Formula 1 – Grand Prix – French Grand Prix | 2003 | | 6 July |
| Continental cups (clubs) – America – Copa Libertadores | 2003 | | 25 June–2 July |
| Formula 1 – Grand Prix – European Grand Prix | 2003 | | 29 June |
| Others – Confederations Cup | 2003 | | 29 June |
| National championships – France – Men | 2003 | | 28 June |
| Others – Dave Gallaher Trophy | 2003 | | 28 June |
| WTA Tour – Grand Slam – Wimbledon | 2003 | | 23 June |
| ATP Tour – Grand Slam – Wimbledon | 2003 | | 23 June |
| World Rally Championship (WRC) – Rallies – Rally Cyprus | 2003 | | 20–22 June |
| World Championship – Men – Heavyweight | 2003 | | 21 June |
| ATP Tour – ATP Masters 500 – Halle | 2003 | | 9–15 June |
| Formula 1 – Grand Prix – Canadian Grand Prix | 2003 | | 15 June |
| NBA – Championships – NBA Finals | 2003 | | 15 June |
| PGA Tour – Majors – US Open | 2003 | | 15 June |
| ATP Tour – ATP Masters 500 – Queen's | 2003 | | 9–15 June |
| 24 hours of Le Mans – Drivers | 2003 | | 15 June |
| NFL Europe – World Bowl | 2003 | | 14 June |
| World Championships – Women's doubles | 2003 | | 8–10 June |
| World Championships – Men's singles | 2003 | | 8–10 June |
| World Championships – Men's doubles | 2003 | | 8–10 June |
| World Championships – Mixed doubles | 2003 | | 8–10 June |
| World Championships – Women's singles | 2003 | | 8–10 June |
| NHL – Championships – Stanley Cup finals | 2003 | | 9 June |
| World Rally Championship (WRC) – Rallies – Rally Greece (Acropolis) | 2003 | | 6–8 June |
| National championships – France – Top 14 – Results | 2003 | | 7 June |
| Ultimate Fighting Championship – Men – Light-heavyweight | 2003 | | 6 June |
| Formula 1 – Grand Prix – Monaco Grand Prix | 2003 | | 1 June |
| UCI World Tour – Giro d'Italia – General standings | 2003 | | 1 June |
| National cups – France – Coupe de France | 2003 | | 31 May |
| National championships – England – Premiership – Results | 2003 | | 30 August–31 May |
| Continental cups (clubs) – Europe – Champions League | 2003 | | 28 May |
| ATP Tour – Grand Slam – French Open | 2003 | | 26 May |
| WTA Tour – Grand Slam – French Open | 2003 | | 26 May |
| Europe – Challenge Cup | 2003 | | 11 October–25 May |
| Southern hemisphere – Super Rugby | 2003 | | 24 May |
| Europe – Champions Cup | 2003 | | 24 May |
| Continental cups (clubs) – Europe – Europa League | 2003 | | 21 May |
| Formula 1 – Grand Prix – Austrian Grand Prix | 2003 | | 18 May |
| ATP Tour – ATP Masters 500 – Hamburg | 2003 | | 18 May |
| National cups – France – Coupe de la Ligue | 2003 | | 17 May |
| ATP Tour – ATP Masters 1000 – Rome | 2003 | | 11 May |
| Euroleague – Results | 2003 | | 11 May |
| World Championships – Men | 2003 | | 11 May |
| World Rally Championship (WRC) – Rallies – Rally Argentina | 2003 | | 8–11 May |
| World Championship – Results | 2003 | | 19 April–5 May |
| Formula 1 – Grand Prix – Spanish Grand Prix | 2003 | | 4 May |
| UCI World Tour – Liège-Bastogne-Liège | 2003 | | 27 April |
Past events
