The 1983 Custom Credit Australian Indoor Championships was a men's tennis tournament played on indoor hard courts at the Sydney Entertainment Centre in Sydney in Australia and was part of the 1983 Volvo Grand Prix. It was the 11th edition of the tournament and was held from 10 October through 16 October 1983. Defending champion and top-seeded John McEnroe won his fourth successive singles title.
|1983 Custom Credit Australian Indoor Championships|
|Draw||32S / 16D|
|Surface||Hard / indoor|
|Venue||Sydney Entertainment Centre|
|Mark Edmondson / Sherwood Stewart|
- It was McEnroe's 5th singles title of the year and the 44th of his career.
- It was Edmondson's 3rd title of the year and the 31st of his career. It was Stewart's 4th title of the year and the 46th of his career.
- "1983 Sydney Indoor – Singles draw". Association of Tennis Professionals (ATP).
- "1983 Sydney Indoor – Doubles draw". Association of Tennis Professionals (ATP).
- John Barrett, ed. (1984). World of Tennis 1984 : The Official Yearbook of the International Tennis Federation. London: Willow Books. pp. 148–149. ISBN 0002181223.