Athletics at the 2019 African Games – Men's 400 metres
The men's 400 metres event at the 2019 African Games was held on 26, 27 and 28 August in Rabat.
Medalists
Results
Heats
Qualification: First 3 in each heat and the next 6 fastest advanced to the semifinals.| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 4 | Derrick Mokaleng | 46.41 | Q | |
| 2 | 1 | Ditiro Nzamani | 46.42 | Q | |
| 3 | 1 | Alphas Kishoyian | 46.46 | Q | |
| 4 | 4 | Ifeanyi Emmanuel Ojeli | 46.48 | Q | |
| 5 | 3 | Chidi Okezie | 46.65 | Q | |
| 6 | 5 | Thapelo Phora | 46.83 | Q | |
| 7 | 3 | Gilles Anthony Afoumba | 46.87 | Q | |
| 8 | 1 | Erayokan Orukpe | 46.94 | Q | |
| 9 | 4 | Va-Sheku Sheriff | 46.98 | Q | |
| 10 | 4 | Leonard Opiny | 47.05 | q | |
| 11 | 5 | Kennedy Luchembe | 47.07 | Q | |
| 12 | 1 | Gardeo Isaacs | 47.15 | q | |
| 13 | 2 | Leungo Scotch | 47.32 | Q | |
| 14 | 3 | Cheikh Tidiane Diouf | 47.39 | Q | |
| 15 | 6 | Joseph Poghisio Loshangar | 47.41 | Q | |
| 16 | 4 | Isaac Makwala | 47.48 | q | |
| 17 | 3 | Modou Lamin Bah | 47.51 | q | |
| 18 | 3 | Andile Lusenga | 47.53 | q | |
| 19 | 5 | Sadam Koumi | 47.58 | Q | |
| 20 | 3 | Gideon Ernst Narib | 47.68 | q | |
| 21 | 6 | Said El Guebbaz | 47.72 | Q | |
| 22 | 4 | Leon Tafirenyika | 47.73 | ||
| 23 | 5 | Alexander Bock | 47.78 | ||
| 24 | 2 | Haron Adoli | 47.87 | Q | |
| 25 | 1 | Djakaridia Bamba | 47.98 | ||
| 26 | 3 | Nsangou Tetndap | 48.06 | ||
| 27 | 2 | Frederick Mendy | 48.23 | Q | |
| 28 | 5 | Dickson Kapandura | 48.42 | ||
| 29 | 5 | Moussa Zaroumey | 48.46 | ||
| 30 | 6 | Jeremy Cotte | 48.46 | Q | |
| 31 | 1 | Abduraman Abdo | 48.60 | ||
| 32 | 2 | Golden Gunde | 48.67 | ||
| 33 | 6 | Efrem Mekonnen | 48.67 | ||
| 34 | 4 | Raymond Kibet | 48.86 | ||
| 35 | 4 | Ali Khamis Gulam | 48.96 | ||
| 36 | 6 | Stefano Bibi | 49.04 | ||
| 37 | 1 | Rodwell Ndlovu | 49.05 | ||
| 38 | 2 | Bachir Ahmat Mahamat | 49.14 | ||
| 39 | 2 | Mustefa Edeo | 49.21 | ||
| 40 | 1 | Akoon Akoon | 49.77 | ||
| 41 | 6 | Esmaiel Freitas | 50.33 | ||
| 42 | 2 | Alford Conteh | 50.35 | ||
| 43 | 6 | Benjamini Michael Kulwa | 50.85 | ||
| 5 | Younes Chattoui |
Semifinals
Qualification: First 2 in each semifinal and the next 2 fastest advanced to the final.| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 1 | Leungo Scotch | 45.52 | Q | |
| 2 | 3 | Thapelo Phora | 45.67 | Q | |
| 3 | 3 | Chidi Okezie | 46.20 | Q | |
| 4 | 1 | Ifeanyi Emmanuel Ojeli | 46.21 | Q | |
| 5 | 3 | Gilles Anthony Afoumba | 46.22 | q | |
| 6 | 2 | Ditiro Nzamani | 46.23 | Q | |
| 7 | 1 | Gardeo Isaacs | 46.52 | q | |
| 8 | 3 | Isaac Makwala | 46.55 | ||
| 9 | 2 | Alphas Kishoyian | 46.61 | Q | |
| 10 | 3 | Sadam Koumi | 46.63 | ||
| 11 | 1 | Va-Sheku Sheriff | 46.66 | ||
| 12 | 2 | Derrick Mokaleng | 46.67 | ||
| 13 | 1 | Joseph Poghisio Loshangar | 46.69 | ||
| 14 | 1 | Andile Lusenga | 46.78 | ||
| 15 | 3 | Cheikh Tidiane Diouf | 46.85 | ||
| 16 | 3 | Kennedy Luchembe | 46.98 | ||
| 17 | 3 | Modou Lamin Bah | 47.09 | ||
| 18 | 1 | Frederick Mendy | 47.41 | ||
| 19 | 2 | Leonard Opiny | 47.56 | ||
| 20 | 1 | Said El Guebbaz | 47.78 | ||
| 21 | 2 | Haron Adoli | 48.01 | ||
| 2 | Gideon Ernst Narib | ||||
| 2 | Jeremy Cotte | ||||
| 2 | Erayokan Orukpe |