The 2005 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 2005 WTA Tour. It was the 20th edition of the tournament and took place from 3 January until 8 January 2005. Unseeded Katarina Srebotnik won the singles title and earned $22,000 first-prize money.

Katarina Srebotnik defeated Shinobu Asagoe, 5–7, 7–5, 6–4

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