1990 Australian Indoor Championships
The 1990 Australian Indoor Championships was a tennis tournament played on indoor hard courts at the Sydney Entertainment Centre in Sydney in Australia and was part of the Championship Series of the 1990 ATP Tour. The tournament ran from 1 through 8 October 1990.
Champions
Men's Singles
Boris Becker defeated 
Stefan Edberg 7–6, 6–4, 6–4
- It was Becker's 5th title of the year and the 38th of his career.
Men's Doubles
Broderick Dyke / Peter Lundgren defeated Stefan Edberg / 
Ivan Lendl 6–2, 6–4
- It was Dyke's only title of the year and the 8th of his career. It was Lundgren's only title of the year and the 6th of his career.