| Venue: | Copenhagen, Denmark  |
| Date: | 30 July - 8 August 1921 |
| Events: | 3 |
| Previous: | Antwerp 1920 |
| Next: | Paris 1922 |
The 1921 UCI Track Cycling World Championships were the World Championship for track cycling. They took place in Copenhagen, Denmark from 30 July to 8 August 1921.[1] Three events for men were contested, two for professionals and one for amateurs.
| Men's Professional Events | ||||||
| Men's sprint | Piet Moeskops | Robert Spears | Pierre Sergent | |||
| Men's motor-paced | Victor Linart | Paul Suter | Paul Guignard | |||
| Men's Amateur Events | ||||||
| Men's sprint | Brask Andersen | Erik Kjeldsen | Johan Normann | |||