2023–24 AFC Cup knockout stage

The 2023–24 AFC Cup knockout stage was played from 12 February to 5 May 2024. A total of 11 teams competed in the knockout stage to decide the champions of the 2023–24 AFC Cup.

Qualified teams
The following teams advanced from the group stage:
 * The winners of the groups and the best runners-up in the West Asia Zone (Groups A–C) and the ASEAN Zone (Groups F–H) advanced to the Zonal semi-finals.
 * The winners of each group in the South Asia Zone (Group D), the Central Asia Zone (Group E), and the East Asia Zone (Group I) advanced to the Inter-zone play-off semi-finals.

Format
In the knockout stage, the 11 teams will play a single-elimination tournament. Each tie was played on a home-and-away two-legged basis, except the ASEAN Zone's semi-finals, ASEAN Zone's final and the final which will be played as a single match. Extra time and penalty shoot-out will be used to decide the winners if necessary (note that the away goals rule is abolished). (Regulations Article 11.3).

The draw for the Zonal finals and the Inter-zone play-off semi-finals was held on 28 December 2023, 14:00 MYT (UTC+8), at the AFC House in Kuala Lumpur, Malaysia.

Schedule
After the draw, the schedule of each round is as follows.

Bracket


Summary
 In the Zonal semi-finals, the four qualified teams from the West Asia Zone (Groups A–C) play in two ties, and the four qualified teams from the ASEAN Zone (Groups F–H) play in two ties, with the matchups and order of legs determined by the group stage draw and the identity of the best runners-up.


 * +West Asia Zone


 * +ASEAN Zone



West Asia Zone
Al-Nahda won 4–2 on aggregate.

''1–1 on aggregate. Al Ahed won on penalties.''

Summary
 Draw for the Zonal finals was held on 28 December. In the Zonal finals, the two winners of West Asia Zonal semi-finals play each other, with the order of legs decided by draw. The two winners of ASEAN Zonal semi-finals play each other, with the host decided by draw. The winners of the West Asia Zonal final advances to the final, while the winners of the ASEAN Zonal final advance to the Inter-zone play-off semi-finals.


 * +West Asia Zone


 * +ASEAN Zone



West Asia Zone
Al Ahed won 3–2 on aggregate.

Summary
Draw for the Inter-zone play-off semi-finals was held on 28 December. In the Inter-zone play-off semi-finals, the four zonal winners other than the West Asia Zone play in two ties (the winners of the South Asia Zone (Group D), the winners of the Central Asia Zone (Group E), the winners of the East Asia Zone (Group I), and the winners of the ASEAN Zonal final. The matchups and order of legs will be decided by draw.



Matches
Abdysh-Ata Kant won 8–1 on aggregate.

Central Coast Mariners won 4–0 on aggregate.

Summary
In the Inter-zone play-off final, the two winners of the Inter-zone play-off semi-finals will play each other, with the order of legs determined by the Inter-zone play-off semi-final draw. The winners of the Inter-zone play-off final advance to the final.



Matches
Central Coast Mariners won 4–1 on aggregate.

Final
In the final, the winners of the West Asia Zonal final and the winners of the Inter-zone play-off final will play each other, with the host team (winners of the West Zone) alternated from the previous season's final.