2021 South American Under-23 Championships in Athletics
| IX South American Under-23 Championships in Athletics | |
|---|---|
| Dates | 16–17 October |
| Host city | Guayaquil, Ecuador |
| Venue | Estadio Modelo Alberto Spencer Herrera |
| Level | Under-23 |
| Events | 45 |
| Participation | 272 athletes from 13 nations |
| Records set | 3 CRs |
The 2021 South American Under-23 Championships in Athletics was the ninth edition of the biennial track and field competition for South American athletes aged under 23 years old, organised by Atletismo Sudamericano. The event was originally scheduled for 2020 but had to be postponed due to the COVID-19 pandemic.