Top-rated United States television programs of 1998–99
# Top-rated United States television programs of 1998–99

This table displays the top-rated primetime television series of the 1998–99 season as measured by Nielsen Media Research.

| Rank | Program | Network | Rating |
| - | - | - | - |
| 1 | ER | NBC | 17.8 |
| 2 | Friends | NBC | 15.7 |
| 3 | Frasier | NBC | 15.6 |
| 4 | Monday Night Football | ABC | 14.9 |
| 5 | Veronica's Closet | NBC | 13.7 |
| 5 | Jesse | NBC | 13.7 |
| 7 | 60 Minutes | CBS | 13.2 |
| 8 | Touched by an Angel | CBS | 13.1 |
| 9 | CBS Sunday Movie | CBS | 12.0 |
| 10 | Home Improvement | ABC | 11.0 |
| 11 | Everybody Loves Raymond | CBS | 10.6 |
| 12 | NYPD Blue | ABC | 10.5 |
| 13 | Law & Order | NBC | 10.1 |
| 14 | The Drew Carey Show | ABC | 9.9 |
| 14 | 20/20 — Friday | ABC | 9.9 |
| 16 | Providence | NBC | 9.8 |
| 16 | 20/20 — Wednesday | ABC | 9.8 |
| 16 | JAG | CBS | 9.8 |
| 19 | Dateline NBC — Tuesday | NBC | 9.7 |
| 19 | Dateline NBC — Monday | NBC | 9.7 |
| 19 | Becker | CBS | 9.7 |
| 19 | CBS Tuesday Movie | CBS | 9.7 |
| 23 | Ally McBeal | FOX | 9.6 |
| 24 | Dharma & Greg | ABC | 9.3 |
| 25 | Spin City | ABC | 9.2 |
| 25 | Walker, Texas Ranger | CBS | 9.2 |
| 25 | Dateline NBC — Friday | NBC | 9.2 |
| 28 | The X-Files | FOX | 9.1 |
| 28 | NBC Sunday Night Movie | NBC | 9.1 |
| 30 | 60 Minutes II | CBS | 9.0 |
| 30 | Diagnosis: Murder | CBS | 9.0 |
