| 2004 J&S Cup | |
|---|---|
| Date | 26 April – 2 May |
| Edition | 9th |
| Category | Tier II |
| Draw | 28S / 16D |
| Prize money | $585,000 |
| Surface | Clay / outdoor |
| Location | Warsaw, Poland |
| Champions | |
| Singles | |
| | |
| Doubles | |
| | |
The 2004 J&S Cup was a Tier II women's tennis event on the 2004 WTA Tour that ran from 26 April until 2 May 2004. It was held in Warsaw, Poland, and was the 9th year that the event was staged. The 2003 J&S Cup finalist Venus Williams won her first Warsaw title and second overall of the year.
Venus Williams defeated
Svetlana Kuznetsova, 6-1, 6-4
Silvia Farina Elia /
Francesca Schiavone defeated
Gisela Dulko /
Patricia Tarabini, 3-6, 6-2, 6-1
| Player | Nationality | Ranking* | Seeding |
|---|---|---|---|
| Amélie Mauresmo | | 3 | 1 |
| Venus Williams | | 4 | 2 |
| Vera Zvonareva | | 11 | 3 |
| Svetlana Kuznetsova | | 14 | 4 |
| | 15 | 5 | |
| Silvia Farina Elia | | 16 | 6 |
| Patty Schnyder | | 17 | 7 |
| Anna Smashnova-Pistolesi | | 20 | 8 |
| Francesca Schiavone | | 22 | 9 |
The following players received wildcards into the main draw:
The following players received entry from the qualifying draw:
The following players received entry as lucky losers: