The 2021 NACAC U23 Championships in Athletics was the 11th edition of the biennial NACAC U23 athletics championships.

They were held in San José, Costa Rica from 9 July to 11 July.

[1] For the first time an U20 competition was held next to the U23 and U18 categories.

Source:[2] *   Host nation (Costa Rica)263 athletes (158 men and 105 women) from 19 nations participated in these championships.