# 1981 Taipei International Championships – Singles

Ivan Lendl was the defending champion, but did not compete this year.
Robert Van't Hof won the title by defeating Pat DuPré 7–5, 6–2 in the final.

## Seeds

* Kim Warwick (first round)
* John Sadri (first round)
* Paul McNamee (semifinals)
* Mark Edmondson (semifinals)
* Bill Scanlon (second round)
* Chris Lewis (second round)
* John Austin (first round)
* Tim Gullikson (quarterfinals)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final |
| | Pat DuPré | 6 | 3 | 6 | | | |
| 4 | Mark Edmondson | 3 | 6 | 4 | | | |
| 4 | Mark Edmondson | 3 | 6 | 4 | Pat DuPré | 5 | 2 |
| | | | | | Robert Van't Hof | 7 | 6 |
| 3 | Paul McNamee | 4 | 0 | | Robert Van't Hof | 7 | 6 |
| | Robert Van't Hof | 6 | 6 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | K Warwick | 0 | 6 | | | | | | | | | | | | | | | | |
| | P DuPré | 6 | 7 | | | P DuPré | 6 | 6 | | | | | | | | | | | |
| | B Drewett | 3 | 2 | | | C Dunk | 2 | 4 | | | | | | | | | | | |
| | C Dunk | 6 | 6 | | | | | | | | P DuPré | 7 | 6 | | | | | | |
| Q | H Hansson | 3 | 1 | | | | | | | Q | I Dupasquier | 6 | 3 | | | | | | |
| Q | I Dupasquier | 6 | 6 | | Q | I Dupasquier | 7 | 6 | | | | | | | | | | | |
| | Wu Chang-rung | 2 | 3 | | 6 | C Lewis | 6 | 4 | | | | | | | | | | | |
| 6 | C Lewis | 6 | 6 | | | | | | | | | | | | | P DuPré | 6 | 3 | 6 |
| 4 | M Edmondson | 6 | 6 | | | | | | | | | | | | 4 | M Edmondson | 3 | 6 | 4 |
| | T Graham | 1 | 4 | | 4 | M Edmondson | 2 | 6 | 6 | | | | | | | | | | |
| Q | B Gilbert | 6 | 7 | | Q | B Gilbert | 6 | 4 | 3 | | | | | | | | | | |
| | L Bourne | 4 | 6 | | | | | | | 4 | M Edmondson | 6 | 3 | 6 | | | | | |
| | L Stefanki | 7 | 7 | | | | | | | 8 | T Gullikson | 3 | 6 | 4 | | | | | |
| | H Kary | 5 | 6 | | | L Stefanki | 4 | 0 | | | | | | | | | | | |
| | R Krishnan | 6 | 6 | 3 | 8 | T Gullikson | 6 | 6 | | | | | | | | | | | |
| 8 | T Gullikson | 7 | 3 | 6 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | B Scanlon | 6 | 6 | 6 | | | | | | | | | | | | | | |
| | C Mayotte | 7 | 3 | 2 | 5 | B Scanlon | 3 | 2 | | | | | | | | | | |
| | L Sanders | 7 | 3 | 5 | | M Estep | 6 | 6 | | | | | | | | | | |
| | M Estep | 6 | 6 | 7 | | | | | | | M Estep | 0 | 3 | | | | | |
| | M Cahill | 6 | 6 | 6 | | | | | | 3 | P McNamee | 6 | 6 | | | | | |
| | S Menon | 4 | 7 | 2 | | M Cahill | 2 | 4 | | | | | | | | | | |
| | J Delaney | 2 | 0 | | 3 | P McNamee | 6 | 6 | | | | | | | | | | |
| 3 | P McNamee | 6 | 6 | | | | | | | | | | | | 3 | P McNamee | 4 | 0 |
| 7 | J Austin | 4 | 2 | | | | | | | | | | | | | R Van't Hof | 6 | 6 |
| | R Van't Hof | 6 | 6 | | | R Van't Hof | 4 | 6 | 7 | | | | | | | | | |
| | P Feigl | 3 | 6 | 2 | | M Davis | 6 | 2 | 6 | | | | | | | | | |
| | M Davis | 6 | 3 | 6 | | | | | | | R Van't Hof | 4 | 6 | 7 | | | | |
| | R Frawley | 6 | 6 | | | | | | | | R Frawley | 6 | 3 | 5 | | | | |
| Q | C Stansbury | 3 | 4 | | | R Frawley | 5 | 6 | 6 | | | | | | | | | |
| | V Winitsky | 6 | 2 | 6 | | V Winitsky | 7 | 4 | 4 | | | | | | | | | |
| 2 | J Sadri | 4 | 6 | 1 | | | | | | | | | | | | | | |