2004 Toray Pan Pacific Open – Singles

Defending champion Lindsay Davenport defeated Magdalena Maleeva in the final, 6–4, 6–1 to win the singles tennis title at the 2004 Pan Pacific Open. It was her first title of the season, and the 39th of her career.

Seeds
The first four seeds received a bye into the second round. • # 🇺🇸 Venus Williams (quarterfinals, withdrew due to a lower right leg strain)

• # 🇺🇸 Lindsay Davenport (champion)

• # 🇷🇺 Elena Dementieva (second round)

• # 🇯🇵 Ai Sugiyama (quarterfinals)

• # 🇺🇸 Chanda Rubin (semifinals, withdrew due to a left knee irritation)

• # 🇷🇺 Nadia Petrova (withdrew due to a left hip flexor strain)

• # Jelena Dokic (semifinals)

• # 🇸🇰 Daniela Hantuchová (quarterfinals)