The 2003 AAPT Championships was a men's tennis tournament played on outdoor hard courts in Adelaide in Australia and was part of the International Series of the 2003 ATP Tour. The tournament ran from 30 December 2002 through 5 January 2003. Unseeded Nikolay Davydenko won the singles title.
See main article: 2003 AAPT Championships – Singles. Nikolay Davydenko defeated Kristof Vliegen 6–2, 7–6(7–3)
See main article: 2003 AAPT Championships – Doubles. Jeff Coetzee / Chris Haggard defeated Max Mirnyi / Jeff Morrison 2–6, 6–4, 7–6(9–7)