1978 Custom Credit Australian Indoor Championships – Singles
Jimmy Connors was the defending champion and won in the final 6–0, 6–0, 6–4 against Geoff Masters.
Seeds
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- Template:Flagicon Jimmy Connors (champion)
- Template:Flagicon Raúl Ramírez (first round)
- Template:Flagicon Arthur Ashe (second round)
- Template:Flagicon John Alexander (first round)
- Template:Flagicon Tony Roche (first round)
- Template:Flagicon Tom Gorman (second round)
- Template:Flagicon John Newcombe (semifinals)
- Template:Flagicon Ken Rosewall (quarterfinals)
Draw
Key
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- Q = Qualifier
- WC = Wild card
- LL = Lucky loser
- Alt = Alternate
- ITF = ITF entry
- PR = Protected ranking
- SR = Special ranking
- SE = Special exempt
- JE = Junior exempt
- JR = Junior Accelerator Programme entrant
- CO = College Accelerator Programme entrant
- NG = Next Gen Accelerator Program entrant
- w/o = Walkover
- r = Retired
- d = Defaulted
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Section 1
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Section 2
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