1989 World Championship Tennis Finals – Singles
| Singles | |
|---|---|
| 1989 WCT Finals | |
| Champion | John McEnroe |
| Runner-up | Brad Gilbert |
| Score | 6–3, 6–3, 7–6 |
Boris Becker was the defending champion but did not compete that year.
John McEnroe won in the final 6–3, 6–3, 7–6 against Brad Gilbert.
The finals were held in Dallas, Texas at Reunion Arena.