1999 AAPT Championships

The 1999 AAPT Championships was a men's ATP tennis tournament held in Adelaide, Australia and played on outdoor hardcourts. It was the 22nd edition of the tournament and was held from 4 to 11 January. Second-seeded Thomas Enqvist won his first title of the year and the 15th of his career.

Singles
🇸🇪 Thomas Enqvist defeated 🇦🇺 Lleyton Hewitt 4–6, 6–1, 6–2
 * It was Enqvist's 1st singles title of the year and the 14th of his career.

Doubles
🇧🇷 Gustavo Kuerten / 🇪🇨 Nicolás Lapentti defeated 🇺🇸 Jim Courier / 🇺🇸 Patrick Galbraith 6–4, 6–4