|Full name||Francisco Segundo Valdés Muñoz|
|Date of birth||19 March 1943|
|Place of birth||Santiago, Chile|
|Date of death||10 August 2009(aged 66)|
|Playing position||Attacking Midfielder|
|1990||San Luis de Quillota|
|1993–1994||Deportes Puerto Montt|
|1996||Rangers de Talca|
|* Senior club appearances and goals counted for the domestic league only.
Francisco Segundo Valdés Muñoz, (19 March 1943 - 10 August 2009), nicknamed Chamaco, was a Chilean footballer and manager. Recognized as one of Chile's most important midfielders, with 215 official goals, he is the top scorer in the history of Chilean league. He was also the uncle of Chilean footballer Sebastián "Chamagol" González.
Valdés always played in the Chilean first division league, where he became the top scorer in their history with 215 goals in 478 official matches, leaving behind Pedro "Heidi" Gonzalez with 212 goals. He is the maximum gunner for Colo Colo in official tournaments with 180 goals scored (179 in 353 matches during the Chilean national championship and 1 goal during the liguilla Copa Libertadores) and the top scorer in Copa Libertadores with 20 goals in 44 matches.
Selected by the Chilean National Team, he played 50 matches, scoring 9 goals. He was the Chilean offensive midfielder in the England 1966 and Germany 1974 FIFA World Cups. In 1973, he was runner-up of the Copa Libertadores with Colo Colo, he was also the captain of the Chilean National Team.
He died of heart failure at his home at the age of 66.