# 1998 Open Gaz de France – Singles

Martina Hingis was the defending champion but did not compete that year.
Mary Pierce won in the final 6–3, 7–5 against Dominique Van Roost.

## 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.
* Jana Novotná (semifinals)
* Iva Majoli (quarterfinals)
* Mary Pierce (champion)
* Nathalie Tauziat (semifinals)
* Anke Huber (quarterfinals)
* Dominique Van Roost (final)
* Barbara Paulus (quarterfinals)
* Sabine Appelmans (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 |
| 3 | Mary Pierce | 6 | 7 | |
| 6 | Dominique Van Roost | 3 | 5 | |

### 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 | Semifinals |
| | | | | | 1 | J Novotná | 6 | 6 | | | | | | | | | | | |
| | R Grande | 7 | 6 | | | R Grande | 1 | 4 | | | | | | | | | | | |
| | M Oremans | 6 | 1 | | | | | | | 1 | J Novotná | 6 | 1 | 6 | | | | | |
| | S Farina | 2 | 6 | 6 | | | | | | 7 | B Paulus | 2 | 6 | 4 | | | | | |
| | D Chládková | 6 | 2 | 3 | | S Farina | 1 | 3 | | | | | | | | | | | |
| | S Kleinová | 3 | 5 | | 7 | B Paulus | 6 | 6 | | | | | | | | | | | |
| 7 | B Paulus | 6 | 7 | | | | | | | | | | | | 1 | J Novotná | 4 | 6 | 3 |
| | | | | | | | | | | | | | | | 3 | M Pierce | 6 | 2 | 6 |
| | | | | | 3 | M Pierce | 6 | 1 | 6 | | | | | | | | | | |
| | K Habšudová | 7 | 4 | 6 | | K Habšudová | 1 | 6 | 1 | | | | | | | | | | |
| | J Halard-Decugis | 6 | 6 | 4 | | | | | | 3 | M Pierce | 1 | 6 | 6 | | | | | |
| WC | A Dechaume-Balleret | 3 | 5 | | | | | | | 5 | A Huber | 6 | 1 | 2 | | | | | |
| | A Kournikova | 6 | 7 | | | A Kournikova | 2 | 6 | 4 | | | | | | | | | | |
| WC | A Fusai | 1 | 1 | | 5 | A Huber | 6 | 1 | 6 | | | | | | | | | | |
| 5 | A Huber | 6 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | S Appelmans | 6 | 6 | | | | | | | | | | | | | | | | |
| Q | L Savchenko | 1 | 3 | | 8 | S Appelmans | 7 | 3 | 1 | | | | | | | | | | |
| LL | S Pitkowski | 6 | 6 | | LL | S Pitkowski | 5 | 6 | 6 | | | | | | | | | | |
| | A-G Sidot | 4 | 0 | | | | | | | LL | S Pitkowski | 1 | 6 | 6 | | | | | |
| | M Maleeva | 0 | 2 | | | | | | | 4 | N Tauziat | 6 | 2 | 7 | | | | | |
| Q | É Loit | 6 | 6 | | Q | É Loit | 6 | 6 | 4 | | | | | | | | | | |
| | | | | | 4 | N Tauziat | 4 | 7 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | | 4 | N Tauziat | 6 | 6 | 1 |
| 6 | D Van Roost | 6 | 4 | 6 | | | | | | | | | | | 6 | D Van Roost | 7 | 1 | 6 |
| | B Schett | 2 | 6 | 0 | 6 | D Van Roost | 5 | 6 | 7 | | | | | | | | | | |
| Q | L Courtois | 6 | 5 | 4 | Q | W Probst | 7 | 2 | 6 | | | | | | | | | | |
| Q | W Probst | 3 | 7 | 6 | | | | | | 6 | D Van Roost | 7 | 6 | | | | | | |
| | F Labat | 6 | 6 | | | | | | | 2 | I Majoli | 5 | 3 | | | | | | |
| | E Likhovtseva | 4 | 1 | | | F Labat | 7 | 2 | 4 | | | | | | | | | | |
| | | | | | 2 | I Majoli | 5 | 6 | 6 | | | | | | | | | | |