The third round of the 1999–2000 UEFA Cup began on 23 November 1999. The round included 24 winners from the second round and eight third-placed teams from the Champions League first group stage.
Matches edit
| Team 1 | Agg. | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
Ajax 
|
0–3 |  Mallorca
|
0–1 | 0–2 |
AEK Athens 
|
2–3 |  Monaco
|
2–2 | 0–1 |
Rangers 
|
2–2 (1–3 p) |  Borussia Dortmund
|
2–0 | 0–2 (a.e.t.) |
Bologna 
|
2–3 |  Galatasaray
|
1–1 | 1–2 |
| Roma
|
1–0 |  Newcastle United
|
1–0 | 0–0 |
Spartak Moscow 
|
2–2 (a) | Leeds United
|
2–1 | 0–1 |
Slavia Prague 
|
5–2 |  Steaua București
|
4–1 | 1–1 |
| Udinese
|
2–2 (a) | Bayer Leverkusen
|
0–1 | 2–1 |
| Arsenal
|
6–3 | Nantes
|
3–0 | 3–3 |
| Deportivo La Coruña
|
5–3 | Panathinaikos
|
4–2 | 1–1 |
| Parma
|
5–4 |  Sturm Graz
|
2–1 | 3–3 (a.e.t.) |
| Lyon
|
3–4 | Werder Bremen
|
3–0 | 0–4 |
| Olympiacos
|
3–4 | Juventus
|
1–3 | 2–1 |
| Celta Vigo
|
8–1 |  Benfica
|
7–0 | 1–1 |
| Wolfsburg
|
3–5 | Atlético Madrid
|
2–3 | 1–2 |
| Lens
|
5–3 | Kaiserslautern
|
1–2 | 4–1 |
First leg edit
| Udinese | 0–1 | Bayer Leverkusen |
|---|---|---|
| Report | Ballack  76' |
| AEK Athens | 2–2 | Monaco |
|---|---|---|
| Nikolaidis 45', 89' |
Report | Giuly 26' Simone 78' |
| Bologna | 1–1 | Galatasaray |
|---|---|---|
| Signori 66' |
Report | Şükür 81' |
| Slavia Prague | 4–1 | Steaua București |
|---|---|---|
| Dostálek 1', 47' Horváth 35'Došek 56' |
Report | Luţu 82' |
| Lens | 1–2 | Kaiserslautern |
|---|---|---|
| Schjønberg 85' (o.g.) |
Report | Sikora 32' (o.g.) Wagner 38' |
| Wolfsburg | 2–3 | Atlético Madrid |
|---|---|---|
| Juskowiak 21' Akonnor 83' (pen.) |
Report | Aguilera 6', 58' Hasselbaink 37' |
| Olympiacos | 1–3 | Juventus |
|---|---|---|
| Giannakopoulos 15' |
Report | Tudor 27' Kovačević 67'Inzaghi 88' |
| Lyon | 3–0 | Werder Bremen |
|---|---|---|
| Anderson 13', 45' Vairelles 77' |
Report |
| Deportivo La Coruña | 4–2 | Panathinaikos |
|---|---|---|
| Olivares 7' (o.g.) Pauleta 11'Djalminha 13'Donato 30' |
Report | Warzycha 29' Galetto 66' |
| Roma | 1–0 | Newcastle United |
|---|---|---|
| Totti 50' (pen.) |
Report |
| Celta Vigo | 7–0 | Benfica |
|---|---|---|
| Karpin 16' (pen.), 54' Makélélé 30'Turdó 39', 50'Juanfran 42'Mostovoi 61' |
Report |
| Spartak Moscow | 2–1 | Leeds United |
|---|---|---|
| Shirko 38' Róbson 65' |
Report | Kewell 14' |
Second leg edit
| Borussia Dortmund | 2–0 (a.e.t.) | Rangers |
|---|---|---|
| Ikpeba 28' Bobic 90' |
Report | |
| Penalties | ||
Bobic  Nijhuis Nerlinger  Barbarez |
3–1 | Amoruso Van Bronckhorst Numan Reyna |
Borussia Dortmund 2–2 Rangers on aggregate. Borussia Dortmund won 3–1 on penalties.
Juventus won 4–3 on aggregate.
Werder Bremen won 4–3 on aggregate.
Galatasaray won 3–2 on aggregate.
Lens won 5–3 on aggregate.
Parma won 5–4 on aggregate.
| Steaua București | 1–1 | Slavia Prague |
|---|---|---|
| Ciocoiu 45' |
Report | Dostálek 50' |
Slavia Prague won 5–2 on aggregate.
| Monaco | 1–0 | AEK Athens |
|---|---|---|
| Simone 32' |
Report |
AS Monaco won 3–2 on aggregate.
| Panathinaikos | 1–1 | Deportivo La Coruña |
|---|---|---|
| Asanović 78' (pen.) |
Report | Makaay 90' |
Deportivo La Coruña won 5–3 on aggregate.
| Bayer Leverkusen | 1–2 | Udinese |
|---|---|---|
| Ballack 22' |
Report | Margiotta 9', 18' |
Bayer Leverkusen 2–2 Udinese on aggregate. Udinese won on away goals rule.
Arsenal won 6–3 on aggregate.
| Leeds United | 1–0 | Spartak Moscow |
|---|---|---|
| Radebe 84' |
Report |
Leeds United 2–2 Spartak Moscow on aggregate. Leeds United won on away goals rule.
Roma won 1–0 on aggregate.
Celta Vigo won 8–1 on aggregate.
| Atlético Madrid | 2–1 | Wolfsburg |
|---|---|---|
| Hasselbaink 4' Correa 86' |
Report | Akonnor 56' (pen.) |
Atlético Madrid won 5–3 on aggregate.
Mallorca won 3–0 on aggregate.