Curitiba CH 1981
Carlos Kirmayr won the title, beating Alejandro Ganzabal 6–1 6–1 in the final.
Main draw 32 players
- 1🇧🇷Carlos KirmayrFinal · Champion
- 2🇧🇷Thomaz KochRound of 32 · Lost to Pablo Arraya
- 3🇺🇾Jose Luis DamianiQuarterfinals · Lost to Alejandro Ganzabal
- 4🇨🇱Belus PrajouxSemifinals · Lost to Carlos Kirmayr
- 5🇧🇷Cassio MottaRound of 32 · Lost to Javier Restrepo
- 6🇦🇷Alejandro GanzabalFinal · Lost to Carlos Kirmayr
- 7🇧🇷Ney KellerRound of 32 · Lost to Ivan Kley
- 🇨🇴Javier RestrepoSemifinals · Lost to Alejandro Ganzabal
- 🇦🇷Alejandro CerundoloQuarterfinals · Lost to Belus Prajoux
- 🇧🇷Ivan KleyQuarterfinals · Lost to Carlos Kirmayr
- 🇦🇷Thomas StalhandskeQuarterfinals · Lost to Javier Restrepo
- 🇦🇷Andres MolinaRound of 16 · Lost to Alejandro Ganzabal
- 🇧🇷Celso SacomandiRound of 16 · Lost to Javier Restrepo
- 🇧🇷Eleuterio MartinsRound of 16 · Lost to Alejandro Cerundolo
- 🇺🇾Hugo RoveranoRound of 16 · Lost to Jose Luis Damiani
- 🇨🇱Ivan CamusRound of 16 · Lost to Ivan Kley
- 🇧🇷Jorge LemannRound of 16 · Lost to Carlos Kirmayr
- 🇮🇹Marcelo GrassiRound of 16 · Lost to Belus Prajoux
- 🇵🇪Pablo ArrayaRound of 16 · Lost to Thomas Stalhandske
- 🇦🇷Edgardo GiussaniRound of 32 · Lost to Hugo Roverano
- 🇧🇷Esidio CoradinRound of 32 · Lost to Marcelo Grassi
- 🇦🇷Gabriel ReissigRound of 32 · Lost to Celso Sacomandi
- 🇧🇷Jose SchmidtRound of 32 · Lost to Alejandro Cerundolo
- 🇪🇸Juan Carlos AndradeRound of 32 · Lost to Eleuterio Martins
- 🇧🇷Julio GoesRound of 32 · Lost to Andres Molina
- 🇧🇷Luiz MullerRound of 32 · Lost to Ivan Camus
- 🇧🇷Marcio AlegreRound of 32 · Lost to Alejandro Ganzabal
- 🇧🇷Noel FreitasRound of 32 · Lost to Jose Luis Damiani
- 🇧🇷Paschoal PenettaRound of 32 · Lost to Belus Prajoux
- 🇧🇷Renato FigueiredoRound of 32 · Lost to Carlos Kirmayr
- 🇧🇷Roger GuedesRound of 32 · Lost to Thomas Stalhandske
- 🇮🇹Vincente BragaRound of 32 · Lost to Jorge Lemann