| Date | Sport | Venue/Event | Status | Winner/s |
| 1 | Athletics | .svg.png) Memorial Van Damme (Diamond League #14) | International | .png) United States |
| 1–10 | Baseball | .svg.png) 2017 U-18 Baseball World Cup | International | United States |
| 2–3 | Rowing |  2017 European Rowing U23 Championships | Continental |  Romania |
| 2–27 | Chess |  Chess World Cup 2017 | International |  Levon Aronian |
| 3 | Formula One |  2017 Italian Grand Prix | International |  Lewis Hamilton ( Mercedes) |
| 3 | Triathlon |  2017 ITU Triathlon World Cup #9 | International | Men:  Gustav Iden
Women: .svg.png) Gillian Backhouse |
| 3–9 | Water polo |  2017 FINA World Women's Junior Water Polo Championships | International |  Russia |
| 4–9 | Six-red snooker |  2017 Six-red World Championship | International |  Mark Williams |
| 5–10 | Mountain bike racing | 2017 UCI Mountain Bike World Championships | International | .svg.png) Switzerland |
| 5–10 | Volleyball |  2017 FIVB Volleyball Women's World Grand Champions Cup | International |  China |
| 7–10 | Canoe marathon |  2017 ICF Canoe Marathon World Championships | International |  Hungary |
| 7–31 December | American football |  2017 NFL season (regular) | Domestic | AFC:  New England Patriots
NFC:  Philadelphia Eagles |
| 8–10 | Ten-pin bowling |  2017 Weber Cup | International |  Team Europe |
| 8–16 | Basketball |  / AfroBasket 2017 | Continental | Tunisia |
| 9–10 | Golf | 2017 Walker Cup | International | Team USA |
| 10 | Triathlon | 2017 Ironman 70.3 World Championship | International | Men:  Javier Gómez
Women: Daniela Ryf |
| 10 | Motorcycle racing |  2017 San Marino and Rimini's Coast motorcycle Grand Prix | International | MotoGP: Marc Márquez ( Repsol Honda Team)
Moto2: Dominique Aegerter ( Kiefer Racing)
Moto3: Romano Fenati ( Marinelli Rivacold
Snipers) |
| 10–17 | Volleyball |  2017 FIVB Volleyball Women's U23 World Championship | International |  Turkey |
| 10–17 | Badminton |  2017 BWF World Senior Championships | International | England |
| 10–23 | Association football | 2017 AFC U-16 Women's Championship | Continental |  North Korea |
| 12–16 | Snooker | 2017 Indian Open | International |  John Higgins |
| 12–17 | Volleyball | 2017 FIVB Volleyball Men's World Grand Champions Cup | International |  Brazil |
| 13–17 | Table tennis |  2017 European Table Tennis Championships | Continental | Men: Germany
Women: Romania |
| 14–17 | Golf |  2017 Evian Championship | International |  Anna Nordqvist |
| 14–17 | Triathlon |  2017 ITU World Triathlon Series Grand Final | International | Men: Vincent Luis
Women:  Flora Duffy |
| 16–17 | Darts | 2017 Champions League of Darts | International |  Mensur Suljović |
| 16–17 | Rugby sevens | 2017 Women's Africa Cup Sevens | Continental | South Africa |
| 16–23 | Indoor cricket |  2017 Indoor Cricket World Cup | International | Men: Australia
Women: Australia |
| 16–23 | Windsurfing | 2017 RS:X World Championships | International | Men: Ye Bing
Women: Chen Peina |
| 16–26 | Chess |  2017 World Youth Chess Championship | International | Men's U18:  Jose Eduardo Martinez Alcantara
Women's U18: Laura Unuk
Boy's U16: Andrey Esipenko
Girl's U16: Annie Wang |
| 17 | Formula One |  2017 Singapore Grand Prix | International | Lewis Hamilton ( Mercedes) |
| 17–23 | Multi-sport |  2017 ASEAN Para Games | Regional |  Indonesia |
| 17–24 | Road cycling | 2017 UCI Road World Championships | International | Netherlands |
| 17–27 | Multi-sport |  2017 Asian Indoor and Martial Arts Games | Continental | Turkmenistan |
| 18–24 | Snooker | 2017 World Open | International | Ding Junhui |
| 18–27 | Association football |  2017 SAFF U-18 Championship | Regional |  Nepal |
| 22–1 October | Volleyball |  / 2017 Women's European Volleyball Championship | Continental |  Serbia |
| 22–24 | Tennis | 2017 Laver Cup | International | Team Europe |
| 22–24 | Aerobic gymnastics | 2017 Aerobic Gymnastics European Championships | Continental | Russia |
| 23–1 October | Canoe slalom | 2017 ICF Canoe Slalom World Championships | International | Czech Republic |
| 23–24 | Triathlon | 2017 ITU Triathlon World Cup #10 | International | Men: Justus Nieschlag
Women: Vendula Frintová |
| 23–30 | Weightlifting |  2017 European Youth Weightlifting Championships | Continental | Romania |
| 24 | Basketball | 2017 FIBA Intercontinental Cup | International | Iberostar Tenerife |
| 24 | Motorcycle racing |  2017 Aragon motorcycle Grand Prix | International | MotoGP: Marc Márquez ( Repsol Honda Team)
Moto2: Franco Morbidelli ( EG 0,0 Marc VDS)
Moto3: Joan Mir ( Leopard Racing) |
| 24 | Athletics | 2017 Berlin Marathon (WMM #4) | International | Men:  Eliud Kipchoge
Women: Gladys Cherono |
| 24–1 October | Rowing | 2017 World Rowing Championships | International | Italy |
| 26–1 October | Volleyball | 2017 Men's NORCECA Volleyball Championship | Continental | United States |
| 27–30 | Basketball |  2017 FIBA Melanesia Basketball Cup
2017 FIBA Women's Melanesia Basketball Cup | International | Papua New Guinea
Papua New Guinea |
| 27–21 October | Cricket | 2017-18 JLT One-Day Cup | Domestic |  Western Australia |
| 28–1 October | Golf | 2017 Presidents Cup | International | United States |
| 29–8 October | Multi-sport |  2017 South American Youth Games | Continental | Brazil |
| 30 | Triathlon | 2017 ITU Triathlon World Cup #11 | International | Men: Uxío Abuín Ares
Women: Jolanda Annen |