2013 AFC Cup knockout stage
The knock-out stage of the 2013 AFC Cup was played from 14 May to 2 November 2013. A total of 16 teams competed in the knock-out stage.
Qualified teams
The winners and runners-up of each of the eight groups in the group stage qualified for the knock-out stage. Both West Asia Zone and East Asia Zone had eight teams qualified.Format
In the knock-out stage, the 16 teams played a single-elimination tournament. In the quarter-finals and semi-finals, each tie was played on a home-and-away two-legged basis, while in the round of 16 and final, each tie was played as a single match. The away goals rule, extra time and penalty shoot-out were used to decide the winner if necessary.Schedule
The schedule of each round was as follows.Bracket
In the round of 16, the winners of one group played the runners-up of another group in the same zone, with the group winners hosting the match. The matchups were determined as follows:;West Asia Zone
- Winner Group A vs. Runner-up Group C
- Winner Group C vs. Runner-up Group A
- Winner Group B vs. Runner-up Group D
- Winner Group D vs. Runner-up Group B
- Winner Group E vs. Runner-up Group G
- Winner Group G vs. Runner-up Group E
- Winner Group F vs. Runner-up Group H
- Winner Group H vs. Runner-up Group F
Round of 16
The matches were played on 14 and 15 May 2013.!colspan=3|West Asia Zone
!colspan=3|East Asia Zone
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Quarter-finals
The first legs were played on 17 September 2013, and the second legs were played on 24 September 2013.First leg
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Second leg
East Bengal won 2–1 on aggregate.----
2–2 on aggregate. Al-Qadsia won on away goals.
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Al-Faisaly won 4–2 on aggregate.
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Al-Kuwait won 12–2 on aggregate.
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Semi-finals
The first legs were played on 1 and 2 October 2013, and the second legs were played on 22 October 2013.First leg
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Second leg
Al-Kuwait won 7–2 on aggregate.----
''Al-Qadsia won 3–1 on aggregate.''