| Singles | |
|---|---|
| 2005 ABN AMRO World Tennis Tournament | |
| Champion |  Roger Federer |
| Runner-up |  Ivan Ljubičić |
| Final score | 5–7, 7–5, 7–6(7–5) |
| Draw | 32 (4 Q / 3 WC ) |
| Seeds | 8 |
Lleyton Hewitt was the defending champion, but chose not to participate that year.
Roger Federer won in the final 5–7, 7–5, 7–6(7–5), against Ivan Ljubičić.
Roger Federer (champion)
Guillermo Coria (second round)
Tim Henman (quarterfinals) David Nalbandian (first round)
Joachim Johansson (second round)
Nikolay Davydenko (quarterfinals)
Dominik Hrbatý (first round)
Feliciano López (first round)| Semifinals | Final | ||||||||||||
| 1 | Roger Federer | 7 | 6 | ||||||||||
| Mario Ančić | 5 | 3 | |||||||||||
| 1 | Roger Federer | 5 | 7 | 7 | |||||||||
| Ivan Ljubičić | 7 | 5 | 65 | ||||||||||
| Thomas Johansson | 64 | 5 | |||||||||||
| Ivan Ljubičić | 7 | 7 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | R Federer | 6 | 6 | ||||||||||||||||||||||||
| Q |  B Ulihrach | 3 | 4 | 1 | R Federer | 6 | 6 | ||||||||||||||||||||
 S Grosjean | 65 | 2 | Q | S Wawrinka | 1 | 4 | |||||||||||||||||||||
| Q | S Wawrinka | 7 | 6 | 1 | R Federer | 7 | 7 | ||||||||||||||||||||
| T Berdych | 7 | 6 | 6 | N Davydenko | 5 | 5 | |||||||||||||||||||||
| R Söderling | 5 | 2 | T Berdych | 68 | 0 | ||||||||||||||||||||||
| F Verdasco | 5 | 6 | 4 | 6 | N Davydenko | 7 | 6 | ||||||||||||||||||||
| 6 | N Davydenko | 7 | 2 | 6 | 1 | R Federer | 7 | 6 | |||||||||||||||||||
| 3 | T Henman | 7 | 6 | M Ančić | 5 | 3 | |||||||||||||||||||||
 N Kiefer | 5 | 4 | 3 | T Henman | 6 | 6 | |||||||||||||||||||||
| M Llodra | 64 | 6 | 6 | M Llodra | 4 | 1 | |||||||||||||||||||||
| WC |  P Wessels | 7 | 4 | 2 | 3 | T Henman | 65 | 64 | |||||||||||||||||||
| M Ančić | 7 | 7 | M Ančić | 7 | 7 | ||||||||||||||||||||||
 T Dent | 65 | 5 | M Ančić | 6 | 6 | ||||||||||||||||||||||
| Q |  O Rochus | 6 | 7 | Q | O Rochus | 4 | 3 | ||||||||||||||||||||
| 8 | F López | 4 | 64 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | J Johansson | 6 | 62 | 6 | |||||||||||||||||||||||
| Q |  Y-t Wang | 2 | 7 | 3 | 5 | J Johansson | 4 | 4 | |||||||||||||||||||
| K Beck | 2 | 6 | 1 | T Johansson | 6 | 6 | |||||||||||||||||||||
| T Johansson | 6 | 3 | 6 | T Johansson | 6 | 7 | |||||||||||||||||||||
| R Schüttler | 4 | 2 | R Štěpánek | 2 | 65 | ||||||||||||||||||||||
| JC Ferrero | 6 | 6 | JC Ferrero | 4 | 7 | 3 | |||||||||||||||||||||
| R Štěpánek | 6 | 4 | 6 | R Štěpánek | 6 | 66 | 6 | ||||||||||||||||||||
| 4 | D Nalbandian | 2 | 6 | 1 | T Johansson | 64 | 5 | ||||||||||||||||||||
| 7 | D Hrbatý | 4 | 6 | 2 | I Ljubičić | 7 | 7 | ||||||||||||||||||||
| I Ljubičić | 6 | 1 | 6 | I Ljubičić | 6 | 5 | 6 | ||||||||||||||||||||
 A Pavel | 6 | 5 | 4 | WC | S Schalken | 4 | 7 | 3 | |||||||||||||||||||
| WC | S Schalken | 4 | 7 | 6 | I Ljubičić | 3 | 6 | 6 | |||||||||||||||||||
| I Andreev | 64 | 6 | 5 |  P Srichaphan | 6 | 4 | 2 | ||||||||||||||||||||
| P Srichaphan | 7 | 1 | 7 | P Srichaphan | 2 | 7 | 6 | ||||||||||||||||||||
| WC | R Sluiter | 2 | 4 | 2 | G Coria | 6 | 62 | 3 | |||||||||||||||||||
| 2 | G Coria | 6 | 6 | ||||||||||||||||||||||||
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