2018 IAAF World U20 Championships
| Host city | Tampere, Finland |
|---|---|
| Nations | 156 + 2 teams |
| Athletes | 1462 |
| Events | 44 |
| Dates | 10–15 July |
| Opened by | Sauli Niinistö |
| Main venue | Tampere Stadium |
The 2018 World U20 Championships in Athletics, also known as the World Junior Championships, was an international athletics competition for athletes qualifying as juniors (born no earlier than 1 January 1999) which was held at Tampere Stadium in Tampere, Finland on 10–15 July 2018. The championships were originally awarded to Tampere by the IAAF in March, 2016.