Bangkok 1981
Bill Scanlon won the title, beating Mats Wilander 6–2 6–3 in the final.
Main draw 32 players
- 1🇮🇳Vijay AmritrajQuarterfinals · Lost to Anders Jarryd
- 2🇦🇺Mark EdmondsonRound of 16 · Lost to Ramesh Krishnan
- 4🇺🇸Bill ScanlonFinal · Champion
- 5🇳🇿Chris LewisRound of 16 · Lost to Anders Jarryd
- 6🇺🇸Van WinitskyQuarterfinals · Lost to Ramesh Krishnan
- 7🇺🇸John AustinQuarterfinals · Lost to Bill Scanlon
- 8🇸🇪Joakim NystromRound of 16 · Lost to Mats Wilander
- 🇸🇪Mats WilanderFinal · Lost to Bill Scanlon
- 🇸🇪Anders JarrydSemifinals · Lost to Bill Scanlon
- 🇮🇳Ramesh KrishnanSemifinals · Lost to Mats Wilander
- 🇺🇸Chris DunkQuarterfinals · Lost to Mats Wilander
- 🇺🇸Chris MayotteRound of 16 · Lost to Bill Scanlon
- 🇬🇧Jonathan SmithRound of 16 · Lost to John Austin
- 🇺🇸Lloyd BourneRound of 16 · Lost to Van Winitsky
- 🇺🇸Marty DavisRound of 16 · Lost to Chris Dunk
- 🇦🇺Rod FrawleyRound of 16 · Lost to Vijay Amritraj
- 🇮🇳Anand AmritrajRound of 32 · Lost to Mats Wilander
- 🇦🇺Brad DrewettRound of 32 · Lost to Rod Frawley
- Q🇳🇱Eric WilbortsRound of 32 · Lost to Anders Jarryd
- Q🇦🇺Hans HanssonRound of 32 · Lost to Ramesh Krishnan
- 🇸🇪Hans SimonssonRound of 32 · Lost to Mark Edmondson
- 🇺🇸Jim Delaney#350Round of 32 · Lost to Chris Dunk
- 🇺🇸Larry StefankiRound of 32 · Lost to Vijay Amritraj
- 🇳🇱Louk SandersRound of 32 · Lost to John Austin
- 🇺🇸Mike CahillRound of 32 · Lost to Van Winitsky
- 🇹🇭Panomkorn PladchunilRound of 32 · Lost to Bill Scanlon
- 🇦🇹Peter FeiglRound of 32 · Lost to Jonathan Smith
- Q🇦🇹Robert ReiningerRound of 32 · Lost to Chris Mayotte
- 🇺🇸Robert Vant HofRound of 32 · Lost to Chris Lewis
- 🇹🇭S EummongkolRound of 32 · Lost to Lloyd Bourne
- Q🇮🇳Sashi MenonRound of 32 · Lost to Joakim Nystrom
- 🇺🇸Tony GrahamRound of 32 · Lost to Marty Davis