2003 Adidas International
Date	5–12 January
Edition	111th
Surface	Hard / outdoor
Location	Sydney, Australia
Venue	NSW Tennis Centre
Champions
Men's singles
Lee Hyung-taik
Women's singles
Kim Clijsters
Men's doubles
Paul Hanley / Nathan Healey
Women's doubles
Kim Clijsters / Ai Sugiyama
← 2002 · Adidas International · 2004 →

The 2003 Adidas International was a combined 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 2003 ATP Tour and of Tier II of the 2003 WTA Tour. The tournament ran from 5 through 12 January 2003. Lee Hyung-taik and Kim Clijsters won the singles titles.

Lee Hyung-taik defeated Juan Carlos Ferrero 4–6, 7–6^(8–6), 7–6^(7–4)

• It was Lee's 1st title of the year and the 1st of his career.

Kim Clijsters defeated Lindsay Davenport 6–4, 6–3

• It was Clijsters' 1st title of the year and the 15th of her career.

Paul Hanley / Nathan Healey defeated Mahesh Bhupathi / Joshua Eagle 7–6^(7–3), 6–4

• It was Hanley's 1st title of the year and the 2nd of his career. It was Healey's only title of the year and the 2nd of his career.

Kim Clijsters / Ai Sugiyama defeated Conchita Martínez / Rennae Stubbs 6–3, 6–3

• It was Clijsters' 2nd title of the year and the 16th of her career. It was Sugiyama's 1st title of the year and the 25th of her career.

• Official website
• ATP tournament profile
• WTA tournament profile