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A world championship(s) is the top achievement for any sport or contest. The title is usually awarded by contests, ranking systems, stature, ability, etc. This determines the best nation, team, individual (or other entity) in the world in a particular field. Certain sports do not have a world championship, instead they may organise a World cup competition, or they may organize both. Often, the use of the term cup or championship in this sense is just a choice of words. Some sports have multiple champions because of multiple organizations such as mixed martial arts, boxing and wrestling.
Certain sports do not have a world championships or a world cup as such, but may have one or several world champions. Professional boxing, for example, has several world champions at different weights, but each one of them is decided by a "title fight", not a tournament.
A full list is presented at List of world cups and world championships
- Air sports:
- American football: IFAF World Cup
- Athletics: IAAF World Championships in Athletics
- Aquatics: FINA World Aquatics Championships
- Badminton: World Badminton Championships
- Ball games
- Rugby league: Rugby League World Cup
- Rugby union:
- Volleyball: Volleyball World Championship
- Bridge: World Bridge Championships
- Cross country running:
- International DanceSport Federation World Formation dance championships
- An Coimisiún Le Rincí Gaelacha - Oireachtas Rince na Cruinne World Irish Dancing Championships
- Fencing: World Fencing Championships
- Tornado World Championships of Professional Foosball
- Gymnastics: World Gymnastics Championships
- Judo: World Judo Championships
- Kickboxing: W.A.K.O. Amateur World Kickboxing Championships
- Marbles: British and World Marbles Championship
- Motor sport:
- Offshore Powerboating
- Rink Hockey: Rink Hockey World Championship
- Rowing: World Rowing Championships
- ISAF Sailing World Championships
- 470 World Championships
- 49er World Championships
- Elliott 6m World Championships
- Europe World Championships
- Finn World Championships
- Laser World Championships
- Laser 4.7 World Championships
- Laser Radial World Championships
- Star World Championships
- Windsurfing World Championships
- Snooker: World Snooker Championship
- Track and Field: World Championships in Athletics
- Winter Sports:
- Alpine skiing: Alpine World Skiing Championships
- Bandy: Bandy World Championships, Bandy World Championships for women
- Biathlon: Biathlon World Championships
- Bobsleigh: FIBT World Championships
- Curling: World Curling Championships
- Figure Skating: World Figure Skating Championships
- Ice Hockey: Ice Hockey World Championships
- Nordic Skiing: FIS Nordic World Ski Championships
- Skeleton: FIBT World Championships
- Speed Skating: Several, see overview at World championships speed skating
- Amateur Boxing
- Amateur Wrestling:
- Professional Wrestling:
Most successful athlete in each sport 
This table includes medals for both individual and team events. Currently active competitors are highlighted in pale green.
A fuller list can be found on the List of world championships in mind sports page.
- Time trial event.
- Greco-Roman event.
- "DAC Racing". class-1.com. Retrieved 20 April 2012.
- Stefan Everts
- "In-line skating". archive.org. Retrieved 19 April 2012.
- "Figure Skating Senior World Championships - Roll of Honour". rollersports.org. Retrieved 20 April 2012.
- "Daniele Gilardon Biography". rowingone.com. Retrieved 20 April 2012.
- "Paul Elvstrøm - Results". sailing.org. Retrieved 21 April 2012.
- Bobsleigh world championships multiple medallist
- Nordic combined world championships multiple medallist
- Are held three world championships.
- Are held three world championships.
- South Korean short track skater Ahn Hyun-Soo became the most successful skater in the short track at the World Championships
- "Statistics Handbook - Daegu 2011: Part One, p1 to 185 (pdf)". iaaf.org. Retrieved 18 April 2012.
- Dressage event.
- "Reiner Klimke - Results". the-sports.org. Retrieved 20 April 2012.
- "Multi-Medalists Top 15". issf-sports.org. Retrieved 19 April 2012.
- The master,which qualifies the tennis world ranking, is considered the World Championship of individual tennis.
- "WORLD CUP DISTINCTIONS". phf.com.pk. Retrieved 20 April 2012.