Club Atlético del Rosario is an Argentine sports club from Rosario, Santa Fe. One of the oldest clubs still in existence in the country, Atlético del Rosario was a pioneer of football in Rosario, being the first team from that city to play in Primera División, the top division of the Argentine football league system. At the international level, Rosario A.C. was also the first team outside Buenos Aires to win an international tournament, the Tie Cup on three occasions. Atlético was also a founding member of the Liga Rosarina de Football, the main body that organised the practice of association football in Rosario from 1905 to 1930.

The Tie Cup Competition was an international football tournament played between representatives of the Argentina and Uruguay Associations. It was one of the earliest international football tournaments played between members of different national football associations, played on an annual basis until 1919.