| UCL 1999-2000 Seedings | COEFF | OUT | ||
| 1 | ESP | Real Madrid CF | 74.814 | |
| 2 | ESP | Valencia CF | 40.814 | |
| - | GER | FC Bayern München | 90.749 | SF |
| - | ESP | FC Barcelona | 79.814 | SF |
| - | UCL | Manchester United FC | 72.144 | QF |
| - | ITA | Lazio SS Roma | 86.606 | QF |
| - | ENG | Chelsea FC London | 58.144 | QF |
| - | POR | FC Porto | 52.358 | QF |
| - | NED | Feyenoord Rotterdam | 56.908 | L2-U |
| - | FRA | FC Girondins Bordeaux | 56.721 | L2-U |
| - | ITA | Fiorentina AC | 44.606 | L2-U |
| - | FRA | Olympique Marseille | 43.721 | L2-U |
| - | NOR | Rosenborg BK Trondheim | 41.866 | L2-U |
| - | UKR | FK Dinamo Kyïv | 40.145 | L2-U |
| - | CZE | AC Sparta Praha | 26.812 | L2-U |
| - | GER | Hertha BSC Berlin | 22.749 | L2-U |
| - | GER | BV Borussia 09 Dortmund | 84.749 | L1-U |
| - | RUS | OSFK Spartak Moskva | 62.912 | L1-U |
| - | GER | TSV Bayer 04 Leverkusen | 54.749 | L1-U |
| - | ENG | Arsenal FC London | 40.144 | L1-U |
| - | GRE | Olympiakós SFP Pireás | 36.475 | L1-U |
| - | TUR | Galatasaray SK İstanbul | 31.175 | L1-U |
| - | SCO | Rangers FC Glasgow | 22.312 | L1-U |
| - | AUT | SK Sturm Graz | 21.187 | L1-U |
| - | ITA | Milan AC | 66.606 | L1 |
| - | NED | PSV Eindhoven | 49.908 | L1 |
| - | CRO | NK Dinamo Zagreb | 25.187 | L1 |
| - | NED | Willem II Tilburg | 23.908 | L1 |
| - | POR | Boavista FC Porto | 21.358 | L1 |
| - | SWE | AIK Solna | 18.662 | L1 |
| - | NOR | Molde FK | 9.866 | L1 |
| - | SVN | NK Maribor Pivovarna Laško | 7.415 | L1 |
| - | ITA | Parma AC | 87.606 | QR3 |
| - | FRA | Olympique Lyonnais | 49.721 | QR3 |
| - | ESP | RCD Mallorca | 38.814 | QR3 |
| - | DEN | Brøndby IF København | 38.525 | QR3 |
| - | GRE | AEK Áthina | 38.475 | QR3 |
| - | AUT | SK Rapid Wien | 35.187 | QR3 |
| - | POL | RTS Widzew-Piast Łódź | 16.625 | QR3 |
| - | DEN | AAB Ålborg | 14.525 | QR3 |
| - | HUN | MTK Hungária FC Budapest | 12.833 | QR3 |
| - | SUI | Servette FC Genève | 12.000 | QR3 |
| - | CZE | FK Teplice | 11.812 | QR3 |
| - | CYP | Anorthosis FC of Ammokhostos Lárnaka | 9.332 | QR3 |
| - | YUG | FK Partizan Beograd | 7.124 | QR3 |
| - | LVA | Skonto FK Riga | 6.291 | QR3 |
| - | MDA | FC Zimbru Chişinău | 6.166 | QR3 |
| - | ISR | Hapoel opel Haifa FC | 5.770 | QR3 |
| - | TUR | Beşiktaş JK İstanbul | 29.175 | QR2 |
| - | RUS | TSSKA Moskva | 16.912 | QR2 |
| - | ROM | UFC Rapid Bucureşti | 16.100 | QR2 |
| - | GEO | FC Dinamo Tbilisi | 16.083 | QR2 |
| - | BEL | KRC Genk | 14.800 | QR2 |
| - | SVK | ŠK Slovan Bratislava | 14.166 | QR2 |
| - | CRO | NK Rijeka | 10.187 | QR2 |
| - | BLR | FL Dnepr-Transmash Mahīlëu | 4.541 | QR2 |
| - | LTU | FK Žalgiris Vilnius | 4.416 | QR2 |
| - | FIN | FC Haka Valkeakoski | 4.520 | QR2 |
| - | ISL | ÍBV Vestmannaeyjar | 3.166 | QR2 |
| - | MKD | FK Sloga Jugomagnat Skopje | 2.457 | QR2 |
| - | BUL | FK Litex Loveč | 4.791 | QR2 |
| - | MLT | Valletta FC | 0.749 | QR2 |
| - | WAL | Barry Town FC | 1.916 | QR1 |
| - | EST | FC Flora Tallinn | 1.291 | QR1 |
| - | ARM | FK Ćement Ararat | 1.208 | QR1 |
| - | NIR | Glentoran FC Belfast | 0.999 | QR1 |
| - | IRL | St.Patrick's AFC Dublin | 0.916 | QR1 |
| - | FRO | HB Tórshavn | 0.624 | QR1 |
| - | ALB | SK Tiranë | 0.583 | QR1 |
| - | LUX | AS La Jeunesse d'Esch-sur-Alzette | 0.583 | QR1 |
| - | AZE | Kapaz Gäncä FK | 0.458 | QR1 |