Sydney Indoor 1981
John McEnroe won the title, beating Roscoe Tanner 6–4 7–5 6–2 in the final.
Main draw 32 players
- 1🇺🇸John McEnroeFinal · Champion
- 2🇺🇸Roscoe TannerFinal · Lost to John McEnroe
- 3🇺🇸Eliot TeltscherSemifinals · Lost to John McEnroe
- 4🇦🇺Peter McnamaraQuarterfinals · Lost to John Fitzgerald
- 5🇺🇸Vitas GerulaitisQuarterfinals · Lost to Eliot Teltscher
- 6🇵🇾Victor PecciQuarterfinals · Lost to Roscoe Tanner
- 7🇦🇺Kim WarwickRound of 32 · Lost to Jim Delaney
- 8🇺🇸Tom GulliksonQuarterfinals · Lost to John McEnroe
- 🇦🇺John FitzgeraldSemifinals · Lost to Roscoe Tanner
- 🇺🇸Bruce MansonRound of 16 · Lost to Vitas Gerulaitis
- 🇺🇸Ferdi TayganRound of 16 · Lost to Roscoe Tanner
- 🇺🇸Jim Delaney#338Round of 16 · Lost to John Fitzgerald
- 🇦🇺John AlexanderRound of 16 · Lost to Eliot Teltscher
- 🇦🇺Mark EdmondsonRound of 16 · Lost to Tom Gullikson
- 🇦🇺Rod FrawleyRound of 16 · Lost to John McEnroe
- 🇦🇺Syd BallRound of 16 · Lost to Victor Pecci
- 🇺🇸Tim GulliksonRound of 16 · Lost to Peter Mcnamara
- 🇦🇺Brad DrewettRound of 32 · Lost to John McEnroe
- 🇦🇺Brad GuanRound of 32 · Lost to Peter Mcnamara
- 🇦🇺Charlie FancuttRound of 32 · Lost to Tom Gullikson
- 🇦🇺Chris JohnstoneRound of 32 · Lost to Roscoe Tanner
- 🇦🇺Craig A MillerRound of 32 · Lost to Ferdi Taygan
- 🇳🇿David MustardRound of 32 · Lost to Vitas Gerulaitis
- 🇺🇸John BensonRound of 32 · Lost to Victor Pecci
- 🇦🇺Paul KronkRound of 32 · Lost to John Fitzgerald
- 🇺🇸Peter FlemingRound of 32 · Lost to Rod Frawley
- 🇺🇸Peter RennertRound of 32 · Lost to Tim Gullikson
- 🇦🇺Phil DentRound of 32 · Lost to Mark Edmondson
- 🇦🇺Ross CaseRound of 32 · Lost to Syd Ball
- 🇺🇸Sherwood StewartRound of 32 · Lost to Bruce Manson
- 🇺🇸Tony GrahamRound of 32 · Lost to Eliot Teltscher
- 🇦🇺Wayne HampsonRound of 32 · Lost to John Alexander