# 2004 Wien Energie Grand Prix – Singles

Paola Suárez was the defending champion, but chose not to compete in 2004.
Anna Smashnova-Pistolesi won the title.

## Seeds

* Chanda Rubin (second round)
* Anna Smashnova-Pistolesi (winner)
* Lisa Raymond (first round)
* María Vento-Kabchi (second round)
* Amy Frazier (semifinals)
* Alicia Molik (final)
* Magüi Serna (quarterfinals)
* Jelena Kostanić (semifinals)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 8 | Jelena Kostanić | 4 | 3 | | | | | |
| 6 | Alicia Molik | 6 | 6 | | | | | |
| 6 | Alicia Molik | 6 | 6 | 6 | Alicia Molik | 2 | 6 | 2 |
| | | | | 2 | Anna Smashnova-Pistolesi | 6 | 3 | 6 |
| 5 | Amy Frazier | 5 | 2 | 2 | Anna Smashnova-Pistolesi | 6 | 3 | 6 |
| 2 | Anna Smashnova-Pistolesi | 7 | 6 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 1 | C Rubin | 6$^2$ | 7 | 4 | | | | | | | | |
| Q | A Jidkova | 6 | 6 | | Q | A Jidkova | 7 | 6$^3$ | 6 | | | | | | | | |
| WC | B Schwartz | 3 | 2 | | | | | | | Q | A Jidkova | 6$^5$ | 2 | | | | |
| Q | T Li | 6 | 6 | | | | | | | 8 | J Kostanić | 7 | 6 | | | | |
| | I Benešová | 4 | 1 | | Q | T Li | 6 | 2 | 4 | | | | | | | | |
| Q | S Stosur | 0 | 1 | | 8 | J Kostanić | 3 | 6 | 6 | | | | | | | | |
| 8 | J Kostanić | 6 | 6 | | | | | | | | | | | 8 | J Kostanić | 4 | 3 |
| 4 | M Vento-Kabchi | 4 | 6 | 6 | | | | | | | | | | 6 | A Molik | 6 | 6 |
| | M Czink | 6 | 0 | 2 | 4 | M Vento-Kabchi | 1 | 1 | | | | | | | | | |
| | M Weingärtner | 7 | 6 | | | M Weingärtner | 6 | 6 | | | | | | | | | |
| | C Black | 6$^4$ | 1 | | | | | | | | M Weingärtner | 2 | 3 | | | | |
| Q | S Talaja | 6 | 3 | 1 | | | | | | 6 | A Molik | 6 | 6 | | | | |
| | D Hantuchová | 4 | 6 | 6 | | D Hantuchová | 6$^1$ | 3 | | | | | | | | | |
| | M Suchá | 5 | 6$^4$ | | 6 | A Molik | 7 | 6 | | | | | | | | | |
| 6 | A Molik | 7 | 7 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | A Frazier | 6 | 6 | | | | | | | | | | | | | | |
| | A Ivanovic | 4 | 1 | | 5 | A Frazier | 6 | 6 | | | | | | | | | |
| | N Pratt | 7 | 7 | | | N Pratt | 1 | 2 | | | | | | | | | |
| | D Chládková | 6$^5$ | 5 | | | | | | 5 | A Frazier | 3 | 6 | 6 | | | | |
| | Ľ Kurhajcová | 6 | 6 | | | | | | | Ľ Kurhajcová | 6 | 2 | 2 | | | | |
| | Ľ Cervanová | 3 | 1 | | | Ľ Kurhajcová | 6 | 6 | | | | | | | | | |
| | J Zheng | 6 | 6 | | | J Zheng | 4 | 1 | | | | | | | | | |
| 3 | L Raymond | 3 | 2 | | | | | | | | | | | 5 | A Frazier | 5 | 2 |
| 7 | M Serna | 6 | 6 | | | | | | | | | | | 2 | A Smashnova-Pistolesi | 7 | 6 |
| | A Barna | 1 | 0 | | 7 | M Serna | 6 | 6 | | | | | | | | | |
| WC | Y Meusburger | 7 | 6 | | WC | Y Meusburger | 1 | 2 | | | | | | | | | |
| | ME Camerin | 6$^4$ | 1 | | | | | | 7 | M Serna | 1 | 0 | | | | | |
| | G Dulko | 6 | 2 | 2 | | | | | 2 | A Smashnova-Pistolesi | 6 | 6 | | | | | |
| | K Koukalová | 2 | 6 | 6 | | K Koukalová | 0 | 1 | | | | | | | | | |
| | | | | | 2 | A Smashnova-Pistolesi | 6 | 6 | | | | | | | | | |