2025 South American Championships in Athletics was the 54th edition of the biennial athletics competition between South American nations. The event was held in Mar del Plata, Argentina, from 25 to 27 April at the Estadio Justo Ernesto Román.<Ref>Full results</ref>
A record number of 401 athletes from all 13 member federations of Atletismo Sudamericano participated at the championships.