| Date: | 5–10 January |
| Edition: | 19th |
| Category: | WTA Tier IV |
| Draw: | 32S / 16D |
| Prize Money: | $140,000 |
| Location: | Auckland, New Zealand |
| Surface: | Hard / outdoor |
| Venue: | ASB Tennis Centre |
| Champs: | Eleni Daniilidou |
| Champd: |  Mervana Jugić-Salkić Jelena Kostanić |
| Main Name: | WTA Auckland Open |
The 2004 ASB Classic was a women's tennis tournament played on outdoor hard courts at the ASB Tennis Centre in Auckland, New Zealand that was part of Tier IV of the 2004 WTA Tour. It was the 19th edition of the tournament and took place from 5 January until 10 January 2004. Third-seeded Eleni Daniilidou won her second consecutive singles title at the event and earned $22,000 first-prize money.[1] [2] [3]
See main article: 2004 ASB Classic – Singles. Eleni Daniilidou defeated 
Ashley Harkleroad, 6–3, 6–2
See main article: 2004 ASB Classic – Doubles.
Mervana Jugić-Salkić / Jelena Kostanić defeated 
Virginia Ruano Pascual / 
Paola Suárez, 7–6(8–6), 3–6, 6–1| Event | W | F | SF | QF | Round of 16 | Round of 32 | width=85 | Q3 | width=85 | Q2 | width=85 | Q1 |
| Singles | $22,000 | $12,000 | $6,300 | $3,400 | $1,825 | $1,000 | $550 | $300 | $175 | |||
| Doubles * | $6,500 | $3,475 | $1,850 | $1,000 | $550 |
| Event | W | F | SF | QF | Round of 16 | Round of 32 |
| Singles | 95 | 67 | 43 | 24 | 12 | 1 |
|---|---|---|---|---|---|---|
| Doubles | 1 |