| 1978 Custom Credit Australian Indoor Championships | |
|---|---|
| Date | 16–22 October |
| Edition | 6th |
| Category | Grand Prix circuit (Four star) |
| Draw | 32S / 16D |
| Prize money | $175,000 |
| Location | Sydney, Australia |
| Venue | Hordern Pavilion |
| Champions | |
| Singles | |
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| Doubles | |
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The 1978 Custom Credit Australian Indoor Championships was a men's tennis tournament played on indoor hard courts at the Hordern Pavilion in Sydney, Australia and was part of the 1978 Colgate-Palmolive Grand Prix. The tournament was held from 16 October through 22 October 1978. First-seeded Jimmy Connors won the singles title.
Jimmy Connors defeated
Geoff Masters 6–0, 6–0, 6–4
John Newcombe /
Tony Roche defeated
Mark Edmondson /
John Marks 6–4, 6–3