2004 Adidas International
Date	11–18 January
Edition	112th
Surface	Hard / outdoor
Location	Sydney, Australia
Venue	NSW Tennis Centre
Champions
Men's singles
Lleyton Hewitt
Women's singles
Justine Henin-Hardenne
Men's doubles
Jonas Björkman / Todd Woodbridge
Women's doubles
Cara Black / Rennae Stubbs
← 2003 · Adidas International · 2005 →

The 2004 Adidas International was a combine men's and women's tennis tournament played on outdoor hard courts at the NSW Tennis Centre in Sydney in Australia that was part of the International Series of the 2004 ATP Tour and of Tier II of the 2004 WTA Tour. The tournament ran from 11 through 18 January 2004. Lleyton Hewitt and Justine Henin-Hardenne won the singles titles.

Finals

Men's singles

Lleyton Hewitt defeated Carlos Moyá 4–3 (Moyá retired)

• It was Hewitt's 1st title of the year and the 22nd of his career.

Women's singles

Justine Henin-Hardenne defeated Amélie Mauresmo 6–4, 6–4

• It was Henin-Hardenne's 1st title of the year and the 17th of her career.

Men's doubles

Jonas Björkman / Todd Woodbridge defeated Bob Bryan / Mike Bryan 7–6^(7–3), 7–5

• It was Björkman's 1st title of the year and the 39th of his career. It was Woodbridge's 1st title of the year and the 81st of his career.

Women's doubles

Cara Black / Rennae Stubbs defeated Dinara Safina / Meghann Shaughnessy 7–5, 3–6, 6–4

• It was Black's 1st title of the year and the 15th of her career. It was Stubbs' 1st title of the year and the 45th of her career.