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|}
== Babak kualifikasi ==
=== {{Main|Babak kualifikasi pertamaLiga Champions UEFA ===2003–2004}}
{{TwoLegStart}}
{{TwoLegResult|'''[[FC Pyunik|Pyunik]]'''|ARM|2–1|[[Knattspyrnufélag Reykjavíkur|KR Reykjavík]]|ISL|1–0|1–1}}
{{TwoLegResult|'''[[FC Sheriff Tiraspol|Sheriff Tiraspol]]'''|MDA|2–1|[[FC Flora Tallinn|FC Flora]]|EST|1–0|1–1}}
{{TwoLegResult|[[Havnar Bóltfelag|HB Tórshavn]]|FRO|1–5|'''[[FBK Kaunas]]'''|LTU|0–1|1–4}}
{{TwoLegResult|[[FC BATE Borisov|BATE Borisov]]|BLR|1–3|'''[[Bohemian F.C.|Bohemians]]'''|IRL|1–0|0–3}}
{{TwoLegResult|'''[[FK Vardar|Vardar]]'''|MKD|4–2|[[Barry Town F.C.|Barry Town]]|WAL|3–0|1–2}}
{{TwoLegResult|[[CS Grevenmacher|Grevenmacher]]|LUX|0–2|'''[[FK Leotar Trebinje|Leotar]]'''|BIH|0–0|0–2}}
{{TwoLegResult|[[Glentoran F.C.|Glentoran]]|NIR|0–1|'''[[HJK Helsinki]]'''|FIN|0–0|0–1}}
{{TwoLegResult|'''[[Sliema Wanderers F.C.|Sliema Wanderers]]'''|MLT|([[away goals rule|a]])3–3|[[Skonto FC|Skonto]]|LVA|2–0|1–3}}
{{TwoLegResult|'''[[AC Omonia|Omonia]]'''|CYP|2–1|[[FC Irtysh Pavlodar|Irtysh]]|KAZ|0–0|2–1}}
{{TwoLegResult|[[FC Dinamo Tbilisi|Dinamo Tbilisi]]|GEO|3–3([[Adu penalti|p]])|'''[[KF Tirana]]'''|ALB|3–0|0–3 {{aet}}|var1=1990}}
|}
=== Babak kualifikasi kedua pertama===
{{#section:Babak kualifikasi Liga Champions UEFA 2003–2004|Q1}}
{{TwoLegStart}}
{{TwoLegResult|'''[[MTK Hungária FC|MTK Hungária]]'''|HUN|3–2|[[HJK Helsinki]]|FIN|3–1|0–1}}
{{TwoLegResult|[[FC Pyunik|Pyunik]]|ARM|0–3|'''[[PFC CSKA Sofia|CSKA Sofia]]'''|BUL|0–2|0–1}}
{{TwoLegResult|[[FBK Kaunas]]|LTU|0–5|'''[[Celtic F.C.|Celtic]]'''|SCO|0–4|0–1}}
{{TwoLegResult|[[FK Leotar Trebinje|Leotar]]|BIH|1–4|'''[[SK Slavia Prague|Slavia Prague]]'''|CZE|1–2|0–2}}
{{TwoLegResult|[[FC Sheriff Tiraspol|Sheriff Tiraspol]]|MDA|0–2|'''[[FC Shakhtar Donetsk|Shakhtar Donetsk]]'''|UKR|0–0|0–2}}
{{TwoLegResult|'''[[MŠK Žilina|Žilina]]'''|SVK|2–1|[[Maccabi Tel Aviv F.C.|Maccabi Tel Aviv]]|ISR|1–0|1–1}}
{{TwoLegResult|[[Bohemian F.C.|Bohemians]]|IRL|0–5|'''[[Rosenborg BK|Rosenborg]]'''|NOR|0–1|0–4}}
{{TwoLegResult|[[NK Maribor|Maribor]]|SVN|2–3|'''[[NK Dinamo Zagreb|Dinamo Zagreb]]'''|CRO|1–1|1–2}}
{{TwoLegResult|[[PFC CSKA Moscow|CSKA Moscow]]|RUS|2–3|'''[[FK Vardar|Vardar]]'''|MKD|1–2|1–1}}
{{TwoLegResult|[[FC Rapid Bucureşti|Rapid Bucureşti]]|ROU|2–3|'''[[R.S.C. Anderlecht|Anderlecht]]'''|BEL|0–0|2–3}}
{{TwoLegResult|'''[[FK Partizan|Partizan]]'''|SCG|([[Away goals rule|a]])3–3|[[Djurgårdens IF Fotboll|Djurgården]]|SWE|1–1|2–2}}
{{TwoLegResult|'''[[Wisła Kraków]]'''|POL|7–4|[[AC Omonia|Omonia]]|CYP|5–2|2–2}}
{{TwoLegResult|'''[[F.C. Copenhagen|Copenhagen]]'''|DEN|10–1|[[Sliema Wanderers F.C.|Sliema Wanderers]]|MLT|4–1|6–0}}
{{TwoLegResult|[[KF Tirana]]|ALB|2–7|'''[[Grazer AK|GAK]]'''|AUT|1–5|1–2}}
|}
=== Babak kualifikasi ketiga kedua===
{{#section:Babak kualifikasi Liga Champions UEFA 2003–2004|Q2}}
{{TwoLegStart}}
{{TwoLegResult|[[FK Vardar|Vardar]]|MKD|4–5|'''[[AC Sparta Prague|Sparta Prague]]'''|CZE|2–3|2–2}}
===Babak kualifikasi ketiga===
{{TwoLegResult|[[MTK Hungária FC|MTK Hungária]]|HUN|0–5|'''[[Celtic F.C.|Celtic]]'''|SCO|0–4|0–1}}
{{#section:Babak kualifikasi Liga Champions UEFA 2003–2004|Q1}}
{{TwoLegResult|'''[[Rangers F.C.|Rangers]]'''|SCO|3–2|[[F.C. Copenhagen|Copenhagen]]|DEN|1–1|2–1}}
{{TwoLegResult|[[FK Austria Wien|Austria Wien]]|AUT|0–1|'''[[Olympique de Marseille|Marseille]]'''|FRA|0–1|0–0}}
{{TwoLegResult|'''[[Club Brugge K.V.|Club Brugge]]'''|BEL|([[Adu penalti|p]])3–3|[[Borussia Dortmund]]|GER|2–1|1–2 {{aet}}}}
{{TwoLegResult|[[FC Shakhtar Donetsk|Shakhtar Donetsk]]|UKR|2–3|'''[[FC Lokomotiv Moscow|Lokomotiv Moscow]]'''|RUS|1–0|1–3}}
{{TwoLegResult|'''[[S.S. Lazio|Lazio]]'''|ITA|4–1|[[S.L. Benfica|Benfica]]|POR|3–1|1–0}}
{{TwoLegResult|'''[[FC Dynamo Kyiv|Dynamo Kyiv]]'''|UKR|5–1|[[NK Dinamo Zagreb|Dinamo Zagreb]]|CRO|3–1|2–0}}
{{TwoLegResult|[[Rosenborg BK|Rosenborg]]|NOR|0–1|'''[[Deportivo de La Coruña|Deportivo La Coruña]]'''|ESP|0–0|0–1}}
{{TwoLegResult|[[Grasshopper-Club Zürich|Grasshopper]]|SUI|2–3|'''[[AEK Athens F.C.|AEK Athens]]'''|GRE|1–0|1–3}}
{{TwoLegResult|[[MŠK Žilina|Žilina]]|SVK|0–5|'''[[Chelsea F.C.|Chelsea]]'''|ENG|0–2|0–3}}
{{TwoLegResult|'''[[Celta de Vigo|Celta Vigo]]'''|ESP|3–2|[[SK Slavia Prague|Slavia Prague]]|CZE|3–0|0–2}}
{{TwoLegResult|'''[[FK Partizan|Partizan]]'''|SCG|([[Adu penalti|p]])1–1|[[Newcastle United F.C.|Newcastle United]]|ENG|0–1|1–0}}
{{TwoLegResult|'''[[Galatasaray S.K. (football team)|Galatasaray]]'''|TUR|6–0|[[PFC CSKA Sofia|CSKA Sofia]]|BUL|3–0|3–0}}
{{TwoLegResult|'''[[R.S.C. Anderlecht|Anderlecht]]'''|BEL|4–1|[[Wisła Kraków]]|POL|3–1|1–0}}
{{TwoLegResult|[[Grazer AK|GAK]]|AUT|2–3|'''[[AFC Ajax|Ajax]]'''|NED|1–1|1–2 {{aet}}}}
|}
== Babak grup ==
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