The 2005 Toray Pan Pacific Open was a women's tennis tournament played on indoor carpet courts. It was the 22nd edition of the Toray Pan Pacific Open, and was part of the Tier I Series of the 2005 WTA Tour. It took place at the Tokyo Metropolitan Gymnasium in Tokyo, Japan, from January 28 through February 6, 2005. Maria Sharapova won the singles title.
See main article: 2005 Toray Pan Pacific Open – Singles. 
Maria Sharapova defeated 
Lindsay Davenport, 6–1, 3–6, 7–6
See main article: 2005 Toray Pan Pacific Open – Doubles. 
Janette Husárová / Elena Likhovtseva defeated Lindsay Davenport / Corina Morariu, 6–4, 6–3