Sport Boys Association, commonly referred to as Sport Boys or simply Boys, is a Peruvian football club based in the port city of Callao. It was founded on Peru's independence day, July 28, 1927. Its classic and historic rival is the Atlético Chalaco against whom dispute the Clasico Porteño derby of Callao. It is considered the fourth most important club in the history of Peruvian football as they have won 6 national titles and have the largest number of international appearances after Universitario, Sporting Cristal and Alianza Lima, teams of Lima.