1981 Custom Credit Australian Indoor Championships – Singles
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John McEnroe was the defending champion and won in the final 6–4, 7–5, 6–2 against Roscoe Tanner.
Seeds
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- Template:Flagicon John McEnroe (champion)
- Template:Flagicon Roscoe Tanner (final)
- Template:Flagicon Eliot Teltscher (semifinals)
- Template:Flagicon Peter McNamara (quarterfinals)
- Template:Flagicon Vitas Gerulaitis (quarterfinals)
- Template:Flagicon Víctor Pecci (quarterfinals)
- Template:Flagicon Kim Warwick (first round)
- Template:Flagicon Tom Gullikson (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
Finals
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Section 1
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Section 2
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