The 1984 Pan Pacific Open was a women's tennis tournament played on indoor carpet courts in Tokyo, Japan that was part of the Category 4 tier of the 1984 Virginia Slims World Championship Series.

The tournament was held from 10 December through 16 December 1984.

Second-seeded Manuela Maleeva won the singles title and earned $40,000 first-prize money.

[1] Manuela Maleeva defeated Claudia Kohde-Kilsch 3–6, 6–3, 6–4 Claudia Kohde-Kilsch / Helena Suková defeated Elizabeth Smylie / Catherine Tanvier 6–4, 6–1