The knockout stage of the 2011 AFC Asian Cup started on 21 January and ended on 29 January 2011.
[1] The top two placed teams from each preliminary group advanced to this stage.
Man of the Match: Shinji Kagawa (Japan) Assistant referees: Mu Yuxin (China) Mohd Sabri bin Mat Daud (Malaysia) Fourth official: Abdullah Al Hilali (Oman) Man of the Match: Ulugbek Bakayev (Uzbekistan) Assistant referees: Jeffrey Goh Gek Pheng (Singapore) Haja Maidin (Singapore) Fourth official: Yuichi Nishimura (Japan) Man of the Match Harry Kewell (Australia) Assistant referees: Mohammad Dharman (Qatar) Hassan Al Thawadi (Qatar) Fourth official: Kim Dong-Jin (South Korea) Man of the Match: Lee Yong-rae (South Korea) Assistant referees: Abdukhamidullo Rasulov (Uzbekistan) Rafael Ilyasov (Uzbekistan) Fourth official: Nawaf Shukralla (Bahrain) Man of the Match: Keisuke Honda (Japan) Assistant referees: Hassan Kamranifar (Iran) Reza Sokhandan (Iran) Fourth official: Abdulrahman Abdou (Qatar) Man of the Match: Matt McKay (Australia) Assistant referees: Saleh Al Marzouqi (UAE) Yaser Marad (UAE) Fourth official: Nawaf Shukralla (Bahrain) Man of the Match: Ji Dong-won (South Korea) Assistant referees: Jeffrey Goh Gek Pheng (Singapore) Haja Maidin (Singapore) Fourth official: Abdulrahman Abdou (Qatar) Man of the Match: Eiji Kawashima (Japan) Assistant referees: Abdukhamidullo Rasulov (Uzbekistan) Rafael Ilyasov (Uzbekistan) Fourth official: Subkhiddin Mohd Salleh (Malaysia)