# 2004 Open Gaz de France – Singles

Serena Williams was the defending champion but did not compete that year.
Kim Clijsters won in the final 6–2, 6–1 against Mary Pierce.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated. The top four seeds received a bye to the second round.
* Kim Clijsters (champion)
* Elena Dementieva (quarterfinals)
* Patty Schnyder (second round)
* Jelena Dokić (second round)
* Francesca Schiavone (quarterfinals)
* Anna Smashnova-Pistolesi (first round)
* Silvia Farina Elia (quarterfinals)
* Magüi Serna (second round)

## 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

### Final

| Final | Final | Final | Final | Final |
| 1 | Kim Clijsters | 6 | 6 | |
| | Mary Pierce | 2 | 1 | |

### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 1 | K Clijsters | 6 | 6 | | | | | | | | | | |
| | E Daniilidou | 4 | 6 | 2 | | M Sánchez Lorenzo | 1 | 0 | | | | | | | | | | |
| | M Sánchez Lorenzo | 6 | 4 | 6 | | | | | | 1 | K Clijsters | 3 | 7 | 6 | | | | |
| | T Pisnik | 6 | 6 | | | | | | | 7 | S Farina Elia | 6 | 5 | 4 | | | | |
| | D Chládková | 2 | 1 | | | T Pisnik | 0 | 4 | | | | | | | | | | |
| WC | A Stevenson | 7$^7$ | 5 | 2 | 7 | S Farina Elia | 6 | 6 | | | | | | | | | | |
| 7 | S Farina Elia | 6$^5$ | 7 | 6 | | | | | | | | | | | 1 | K Clijsters | 6 | 6 |
| | | | | | | | | | | | | | | | Q | D Safina | 1 | 1 |
| | | | | | 3 | P Schnyder | 6 | 2 | 1 | | | | | | | | | |
| Q | J Janković | 4 | 0 | r | Q | D Safina | 4 | 6 | 6 | | | | | | | | | |
| Q | D Safina | 6 | 2 | | | | | | | Q | D Safina | 6 | 4 | 6 | | | | |
| | M Vento-Kabchi | 2 | 3 | | | | | | | 5 | F Schiavone | 2 | 6 | 4 | | | | |
| Q | K Šprem | 6 | 6 | | Q | K Šprem | 6$^4$ | 3 | | | | | | | | | | |
| | É Loit | 2 | 6 | 3 | 5 | F Schiavone | 7$^7$ | 6 | | | | | | | | | | |
| 5 | F Schiavone | 6 | 4 | 6 | | | | | | | | | | | | | | |

### Section 2

| 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 |
| 8 | M Serna | 6 | 1 | 6 | | | | | | | | | | | | | |
| | P Mandula | 3 | 6 | 2 | 8 | M Serna | 2 | 4 | | | | | | | | | |
| | M Pierce | 7 | 6 | | | M Pierce | 6 | 6 | | | | | | | | | |
| LL | A Parra | 5 | 2 | | | | | | | | M Pierce | 6 | 6 | | | | |
| | E Bovina | 4 | 6 | 6 | | | | | | | E Bovina | 3 | 4 | | | | |
| Q | A Medina Garrigues | 6 | 2 | 4 | | E Bovina | 4 | 7$^7$ | 6 | | | | | | | | |
| | | | | | 4 | J Dokić | 6 | 6$^5$ | 0 | | | | | | | | |
| | | | | | | | | | | | | | | | M Pierce | 6 | 6 |
| 6 | A Smashnova-Pistolesi | 6 | 5 | 1/r | | | | | | | | | | WC | T Golovin | 4 | 0 |
| WC | T Golovin | 1 | 7 | 3 | WC | T Golovin | w/o | | | | | | | | | | |
| | S Testud | 3 | r | | | D Hantuchová | | | | | | | | | | | |
| | D Hantuchová | 5 | | | | | | | | WC | T Golovin | 6 | 6 | | | | |
| WC | S Cohen-Aloro | 4 | 6 | 7 | | | | | | 2 | E Dementieva | 4 | 4 | | | | |
| LL | C Schaul | 6 | 3 | 5 | WC | S Cohen-Aloro | 5 | 6 | 4 | | | | | | | | |
| | | | | | 2 | E Dementieva | 7 | 1 | 6 | | | | | | | | |