Chilean Olympic Committee (Spanish: Comité Olímpico de Chile, COCH) sent a total of 22 athletes to the Games, 16 men and 6 women, to compete in 11 sports; the nation's team size was roughly smaller from Sydney by almost half of the athletes, due to the absence of the men's football team.

Six Chilean athletes had previously competed in Sydney, including tennis star and top medal favorite Nicolás Massú.

Long-distance freestyle swimmer and Pan American Games bronze medalist Kristel Köbrich set a historic milestone as the nation's first ever female flag bearer in the opening ceremony, wearing and parading with a traditional Chilean costume.

[1] Chile left Athens with a remarkable historic milestone from tennis players Nicolás Massú and Fernando González, as they picked up the grand slam Olympic title for the Chilean team in the men's doubles tournament.

[2][3] While Gonzalez collected a bronze in his match against U.S. tennis player Taylor Dent, Massu summoned his strength to defeat Dent's teammate Mardy Fish with a striking effort to complete the Chilean party on the Olympic tennis court, and most significantly, to snatch his second gold medal in the men's singles.