| Host city |  Athens, Greece |
|---|---|
| Nations | 142 |
| Athletes | 1135 |
| Events | 41 |
| Dates | 16–20 July |
| Main venue | Athens Olympic Stadium |
The 1986 World Junior Championships in Athletics was the inaugural 1986 edition of the World Junior Championships in Athletics. It was held in Athens, Greece on 16–20 July.