Tokyo Indoor 1981
Vincent Van Patten won the title, beating Mark Edmondson 6–2 3–6 6–3 in the final.
Main draw 32 players
- 1🇺🇸John McEnroeSemifinals · Lost to Vincent Van Patten
- 2🇸🇪Bjorn BorgRound of 16 · Lost to Tim Gullikson
- 3🇦🇷Jose Luis ClercRound of 16 · Lost to Vincent Van Patten
- 4🇺🇸Eliot TeltscherRound of 32 · Lost to Bruce Manson
- 5🇺🇸Vitas GerulaitisQuarterfinals · Lost to Vincent Van Patten
- 6🇵🇱Wojtek FibakQuarterfinals · Lost to Mark Edmondson
- 8🇭🇺Balazs TaroczyRound of 32 · Lost to Heinz Gunthardt
- 🇺🇸Vincent Van PattenFinal · Champion
- 🇦🇺Mark EdmondsonFinal · Lost to Vincent Van Patten
- 🇨🇭Heinz GunthardtSemifinals · Lost to Mark Edmondson
- 🇺🇸Bill ScanlonQuarterfinals · Lost to John McEnroe
- 🇺🇸Tim GulliksonQuarterfinals · Lost to Heinz Gunthardt
- 🇺🇸Bruce MansonRound of 16 · Lost to Mark Edmondson
- LL🇺🇸Chris DunkRound of 16 · Lost to Bill Scanlon
- 🇳🇿Chris LewisRound of 16 · Lost to Vitas Gerulaitis
- 🇺🇸Peter RennertRound of 16 · Lost to Heinz Gunthardt
- 🇦🇺Phil DentRound of 16 · Lost to Wojtek Fibak
- 🇯🇵Tsuyoshi FukuiRound of 16 · Lost to John McEnroe
- 🇺🇸Drew GitlinRound of 32 · Lost to Chris Dunk
- 🇯🇵Eiji TakeuchiRound of 32 · Lost to Tim Gullikson
- 🇺🇸Joel BaileyRound of 32 · Lost to Vitas Gerulaitis
- 🇦🇺John FitzgeraldRound of 32 · Lost to Vincent Van Patten
- 🇺🇸John SadriRound of 32 · Lost to John McEnroe
- 🇺🇸Mel PurcellRound of 32 · Lost to Wojtek Fibak
- 🇦🇺Paul McnameeRound of 32 · Lost to Jose Luis Clerc
- 🇮🇳Ramesh KrishnanRound of 32 · Lost to Bjorn Borg
- 🇦🇷Ricardo CanoRound of 32 · Lost to Bill Scanlon
- 🇦🇺Rod FrawleyRound of 32 · Lost to Peter Rennert
- 🇯🇵Shozo ShiraishiRound of 32 · Lost to Tsuyoshi Fukui
- 🇺🇸Terry MoorRound of 32 · Lost to Chris Lewis
- 🇺🇸Tom GulliksonRound of 32 · Lost to Mark Edmondson
- 🇺🇸Victor AmayaRound of 32 · Lost to Phil Dent