The UCI Cyclo-cross World Championships – Junior Men's Cyclo-cross is the annual world championship for in the discipline of cyclo-cross for men in the Junior category, organised by the world governing body, the Union Cycliste Internationale. The winner has the right to wear the rainbow jersey for a full year when competing in Junior cyclo-cross events.
 | |
| Race details | |
|---|---|
| Date | End of January, beginning of February |
| Discipline | Cyclo-cross |
| Type | One-day |
| Organiser | UCI |
| History | |
| First edition | 1979 |
| Editions | 45 (as of 2024) |
| First winner |  Iñaki Vijandi (ESP) |
| Most wins |  Mathieu Van der Poel (NED) Ben Tulett (GBR), 2 wins |
| Most recent |  Stefano Viezzi (ITA) |
Palmares
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Medal count by country
edit| Rank | Nation | Gold | Silver | Bronze | Total |
|---|---|---|---|---|---|
| 1 | Netherlands (NED) | 9 | 7 | 7 | 23 |
| 2 |  Belgium (BEL) | 7 | 8 | 7 | 22 |
| 3 |  Switzerland (SUI) | 7 | 2 | 3 | 12 |
| 4 | Great Britain (GBR) | 5 | 2 | 2 | 9 |
| 5 |  Czech Republic (CZE) | 4 | 5 | 8 | 17 |
| 6 | Czechoslovakia (TCH) | 4 | 3 | 6 | 13 |
| 7 |  France (FRA) | 3 | 6 | 7 | 16 |
| 8 | Italy (ITA) | 2 | 2 | 1 | 5 |
| 9 |  Germany (GER) | 1 | 3 | 3 | 7 |
| 10 | Spain (ESP) | 1 | 2 | 0 | 3 |
 United States (USA) | 1 | 2 | 0 | 3 | |
| 12 |  Denmark (DEN) | 1 | 0 | 0 | 1 |
| 13 |  Slovakia (SVK) | 0 | 2 | 0 | 2 |
| 14 |  Poland (POL) | 0 | 1 | 1 | 2 |
| Totals (14 entries) | 45 | 45 | 45 | 135 | |
Czechoslovakia peacefully split up in Slovakia and Czech Republic in 1993, they are all counted separately following the IOC's example. See also talk page.