The 2011 Copa América knockout stage was the elimination stage of the 2011 Copa América, following the group stage.
It began on 16 July 2011 and consisted of the quarter-finals, the semi-finals, the third place play-off, and the final held at the Estadio Monumental Antonio Vespucio Liberti on 24 July, in Buenos Aires.
Different from previous tournaments, 30 minutes of extra time were played if any match in the final stages finished tied after regulation; previously the match would go straight to a penalty shoot-out.
The top two placed teams from each of the three groups, plus the two best-placed third teams, qualified for the knockout stage.
Man of the Match: Juan Manuel Vargas (Peru) Assistant referees: Leonel Leal (Costa Rica) Francisco Mondría (Chile) Fourth official: Wálter Quesada (Costa Rica) Man of the Match: Fernando Muslera (Uruguay) Assistant referees: Nicolás Yegros (Paraguay) Luis Sánchez (Venezuela) Fourth official: Juan Soto (Venezuela) Man of the Match: Justo Villar (Paraguay) Assistant referees: Ricardo Casas (Argentina) Efraín Castro (Bolivia) Fourth official: Raúl Orosco (Bolivia) Man of the Match: Oswaldo Vizcarrondo (Venezuela) Assistant referees: Luis Alvarado (Ecuador) Luis Abadie (Peru) Fourth official: Víctor Hugo Rivera (Peru) Man of the Match: Luis Suárez (Uruguay) Assistant referees: Efraín Castro (Bolivia) Marvin Torrentera (Mexico) Fourth official: Wilmar Roldán (Colombia) Man of the Match: Juan Arango (Venezuela) Assistant referees: Leonel Leal (Costa Rica) Humberto Clavijo (Colombia) Fourth official: Wálter Quesada (Costa Rica) Man of the Match: Paolo Guerrero (Peru) Assistant referees: Humberto Clavijo (Colombia) Luis Alvarado (Ecuador) Fourth official: Carlos Vera (Ecuador) Man of the Match: Luis Suárez (Uruguay) Assistant referees: Marcio Santiago (Brazil) Francisco Mondría (Chile) Fourth official: Enrique Osses (Chile)