1999 ATP Tour World Championships – Singles
| Singles | |
|---|---|
| 1999 ATP Tour World Championships | |
| Champion | Pete Sampras |
| Runner-up | Andre Agassi |
| Score | 6–1, 7–5, 6–4 |
| Draw | 8 (round robin) |
Pete Sampras defeated Andre Agassi in the final, 6–1, 7–5, 6–4 to win the singles tennis title at the 1999 Tennis Masters Cup. It was his fifth and last Tour Finals title.
Àlex Corretja was the reigning champion, but did not qualify.