The men's 1500 metres event at the 2001 IAAF World Indoor Championships was held on March 9–10.
| width=200 bgcolor=gold | Gold | width=200 bgcolor=silver | Silver | width=200 bgcolor=CC9966 | Bronze |
| Rui Silva | Reyes Estévez | Noah Ngeny |
First 2 of each heat (Q) and the next 3 fastest (q) qualified for the semifinals.
| Rank | Heat | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 3 | 3:37.79 | Q | ||||
| 3 | 3:37.90 | Q, PB | ||||
| 1 | 3:37.93 | Q | ||||
| 1 | 3:38.22 | Q | ||||
| 1 | 3:38.41 | q | ||||
| 1 | 3:39.14 | q | ||||
| 3 | 3:39.21 | q, PB | ||||
| 3 | 3:39.40 | |||||
| 3 | 3:39.55 | SB | ||||
| 10 | 1 | 3:40.42 | PB | |||
| 11 | 1 | 3:40.68 | SB | |||
| 12 | 1 | 3:40.93 | ||||
| 13 | 1 | 3:43.14 | ||||
| 14 | 3 | 3:43.17 | ||||
| 15 | 3 | 3:46.36 | ||||
| 16 | 2 | 3:47.00 | Q | |||
| 17 | 2 | 3:47.06 | Q | |||
| 18 | 2 | 3:47.19 | ||||
| 19 | 2 | 3:47.94 | ||||
| 20 | 3 | 3:48.07 | ||||
| 21 | 2 | 3:48.59 | ||||
| 22 | 2 | 3:49.21 | ||||
| 23 | 2 | 3:49.46 | ||||
| 24 | 2 | 3:53.42 | ||||
| 25 | 3 | 3:56.31 | ||||
| 26 | 3 | 4:02.79 | ||||
| 27 | 2 | 4:03.43 | ||||
| 28 | 2 | 4:06.70 | ||||
| 1 |
| Rank | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|
| 3:51.06 | |||||
| 3:51.25 | |||||
| 3:51.63 | |||||
| 4 | 3:51.71 | ||||
| 5 | 3:51.91 | ||||
| 6 | 3:52.39 | ||||
| 7 | 3:52.72 | ||||
| 8 | 3:53.03 | ||||
| 9 | 3:56.71 |