The men's 20 kilometres walk event at the 2004 African Championships in Athletics was held in Brazzaville, Republic of the Congo on July 16.
Results edit
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
 |
Julius Sawe |  Kenya |
1:27.43 | |
 |
Hassanine Sebei |  Tunisia |
1:28.35 | |
 |
Moussa Aouanouk |  Algeria |
1:29.02 | |
| 4 | Daniel Foudjem Ngano |  Cameroon |
1:33.34 | |
| 5 | Arezki Yahi | Algeria |
1:36.33 | |
| 6 | Ashenafi Merecho |  Ethiopia |
1:39.25 | |
| 7 | Kalamba Beya |  Democratic Republic of the Congo |
1:48.07 | |
| 8 | Gambne Mukwa | Democratic Republic of the Congo |
1:53.54 | |
| Andreas Limingui |  Republic of the Congo |
DQ | ||
| Juvelane Ngueye | Republic of the Congo |
DQ |