1921 UCI Track Cycling World Championships
| Venue | Copenhagen, Denmark | 
|---|---|
| Date(s) | 30 July - 8 August 1921 | 
| Velodrome | Ordrupbanen | 
| Events | 3 | 
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. Three events for men were contested, two for professionals and one for amateurs.