Following is a result of results from the 2002–03 AFC Champions League qualification rounds. The league was the 22nd edition of the top-level Asian club football tournament and the 1st edition under the current AFC Champions League title.
Qualifying Zone 1 (West) edit
Round 1 edit
| Team 1 | Agg. | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
Al-Wehdat 
|
3–2 |  Al Nejmeh
|
3–2 | 0–0 |
| Al Ansar
|
w/o1 |  Al Nasr
|
||
Al Aqsa 
|
w/o2 |  Zhashtyk
|
1. Al Nasr withdrew
2. Al Aqsa withdrew
Round 2 edit
| Team 1 | Agg. | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
| Al-Ansar
|
1–3 | Al Faisaly
|
1–0 | 0–3 |
Pakhtakor 
|
4–3 | Al-Wehdat
|
3–0 | 1–3 |
Al Ahli 
|
3–3 (a) |  Al Kuwait
|
2–0 | 1–3 |
| Zhashtyk
|
0–4 |  Al-Ahli (San'a')
|
0–2 | 0–2 |
Köpetdag Aşgabat 
|
w/o1 |  Al Sadd
|
||
Busaiteen 
|
w/o2 |  Al-Jaish
|
||
| Al-Quds
|
w/o2 | Riffa
|
||
| Al-Ittihad
|
w/o3 |  Khujand
|
1. Köpetdag Aşgabat withdrew citing financial difficulties.
2. AFC did not accept the participation of Busaiteen and Riffa as neither team met sportive qualification criteria.
3. Khujand disqualified following suspension of Tajik FA by FIFA and AFC.
Round 3 edit
| Team 1 | Agg. | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
| Al Ittihad
|
1–5 | Al Arabi
|
1–1 | 0–4 |
| Al Sadd
|
3–2 |  Al Zawraa
|
1–1 | 2–1 (a.e.t.) |
Esteghlal 
|
3–0 | Al Faisaly
|
2–0 | 1–0 |
| Al Ahli
|
5–4 |  Al-Ahli
|
3–2 | 2–2 |
| Al-Ahli (San'a')
|
1–8 | FK Neftchy Farg'ona
|
1–2 | 0–6 |
| Al-Ittihad
|
4–6 | Pakhtakor
|
4–3 | 0–3 |
| Al-Jaish
|
w/o1 | Regar-TadAZ
|
||
| Al-Quds
|
w/o2 | Nisa Aşgabat
|
1. Regar-TadAZ disqualified following suspension of Tajik FA by FIFA and AFC.
2. Al-Quds withdrew due to insecure situation in Palestine.
Round 4 edit
| Team 1 | Agg. | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
| Al-Jaish
|
2–2 (1–4 p) | Al Sadd
|
1–1 | 1–1 |
| Nisa Asgabat
|
w/o1 | Al Arabi
|
||
| Pakhtakor
|
4–2 | Al Ahli
|
3–2 | 1–0 |
| Esteghlal
|
2–2 (a) | FK Neftchy Farg'ona
|
1–0 | 1–2 |
1. Al Arabi withdrew.
Qualifying Zone 2 (East) edit
Round 2 edit
| Team 1 | Agg. | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
Saunders SC 
|
1–7 |  Mohun Bagan
|
0–2 | 1–5 |
| Air Force
|
2–3 |  New Radiant
|
1–1 | 1–2 (a.e.t.) |
Round 3 edit
| Team 1 | Agg. | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
Geylang United FC 
|
7–0 |  DPMM
|
3–0 | 4–0 |
Petrokimia Putra 
|
4–6 |  Shanghai Shenhua
|
3–1 | 1–5 |
South China 
|
3–2 | Home United FC
|
2–1 | 1–1 |
| Persita Tangerang
|
0–1 |  Osotsapa FC
|
0–1 | 0–0 |
Monte Carlo 
|
1–8 |  Daejeon Citizen
|
1–5 | 0–3 |
Shimizu S-Pulse 
|
7–0 | New Radiant
|
7–0 | 0–0 |
| Mohun Bagan
|
5–2 | Club Valencia
|
2–2 | 3–0 |
| Churchill Brothers
|
2–1 |  Saigon Port
|
2–0 | 0–1 |
Round 4 edit
| Team 1 | Agg. | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
| Churchill Brothers
|
4–7 | Osotsapa FC
|
1–1 | 3–6 |
| South China
|
1–8 | Shimizu S-Pulse
|
0–5 | 1–3 |
| Shanghai Shenhua
|
5–1 | Geylang United FC
|
3–0 | 2–1 |
| Daejeon Citizen
|
8–1 | Mohun Bagan
|
6–0 | 2–1 |