The 2023 South American U-20 Championship was the 30th edition of the South American U-20 Championship, the biennial international youth football championship organised by CONMEBOL for the men's under-20 national teams of South America. It was held in Colombia between 19 January and 12 February 2023.

The South American Football Confederation is the continental governing body of football in South America and it is one of FIFA's six continental confederations. The oldest continental confederation in the world, its headquarters are located in Luque, Paraguay. CONMEBOL is responsible for the organization and governance of South American football's major international tournaments. With 10 member football associations, it has the fewest members of all the confederations in FIFA.