Babak gugur Liga Champions AFC 2012

Each round of this single-elimination tournament is played over one or two matches. Pada babak 16 besar, each tie is played in one match, hosted by the winners of each group against the runners-up of another group. In the quarter-finals and semi-finals, each tie is played over two legs on a home-and-away basis. The final is hosted by one of the finalists, decided by draw. The away goals rule (for two-legged ties), extra time (away goals do not apply in extra time) and penalty shootout would be used to decide the winner if necessary.