Athletics at the 1976 Summer Olympics – Men's 400 metres
These are the official results of the Men's 400 metres event at the 1976 Summer Olympics in Montreal. The competition was held on July 26, 1976, July 28, 1976, and on July 29, 1976.
In the final, Fred Newhouse and Maxie Parks appeared to go for the early lead, while Alberto Juantorena was initially a little slower. Then he stretched out on the backstretch to regain position about equal to the third American Herman Frazier. Coming off the final turn Juantorena had caught the rest of the field and was a step behind Newhouse. Parks and Fons Brijdenbach were about even two more strides back with Frazier just behind them. As Juantorena began to pass Newhouse, Newhouse noticeably struggled, rocking and losing form, then the gold medal. Three metres back, Frazier just edged ahead of Brijdenbach for the bronze medal, as Parks faded.Records
These are the standing world and Olympic records prior to the 1976 Summer Olympics.
| World Record | 43.86 |  Lee Evans | Mexico City | October 18, 1968 |
| Olympic Record | 43.86 | Lee Evans | Mexico City | October 18, 1968 |
Final
| Rank | LANE | Athlete | Nation | Time | Notes |
| 2 | Alberto Juantorena | | 44.26 | - |
| 4 | Fred Newhouse | | 44.40 | - |
| 3 | Herman Frazier | | 44.95 | - |
| 4 | 8 | Fons Brijdenbach | | 45.04 | - |
| 5 | 7 | Maxie Parks | | 45.24 | - |
| 6 | 6 | Rick Mitchell | | 45.40 | - |
| 7 | 5 | David Jenkins | | 45.57 | - |
| 8 | 1 | Jan Werner | | 45.63 | - |
Semifinals
| Rank | Athlete | Nation | Time | Notes |
| 1 | Alberto Juantorena | | 45.10 | - |
| 2 | Fons Brijdenbach | | 45.28 | - |
| 3 | Maxie Parks | | 45.61 | - |
| 4 | Rick Mitchell | | 45.69 | - |
| 5 | Bernd Herrmann | | 45.94 | - |
| 6 | Brian Saunders | | 46.46 | - |
| 7 | Alfonso Di Guida | | 46.50 | - |
| 8 | Delmo da Silva | | 46.69 | - |
| Rank | Athlete | Nation | Time | Notes |
| 1 | Fred Newhouse | | 44.89 | - |
| 2 | David Jenkins | | 45.20 | - |
| 3 | Herman Frazier | | 45.24 | - |
| 4 | Jan Werner | | 45.44 | - |
| 5 | Jerzy Pietrzyk | | 45.65 | - |
| 6 | Franz-Peter Hofmeister | | 46.05 | - |
| 7 | Mike Solomon | | 46.20 | - |
| 8 | Karl Honz | | 46.63 | - |
Quarterfinals
| Rank | Athlete | Nation | Time | Notes |
| 1 | Herman Frazier | | 46.52 | - |
| 2 | Fons Brijdenbach | | 46.56 | - |
| 3 | Karl Honz | | 46.94 | - |
| 4 | Alfonso Di Guida | | 47.07 | - |
| 5 | Ossi Karttunen | | 47.45 | - |
| 6 | Peter Grant | | 47.69 | - |
| 7 | Alfred Daley | | 48.46 | - |
| 8 | Glenn Bogue | | 48.98 | - |
| Rank | Athlete | Nation | Time | Notes |
| 1 | Rick Mitchell | | 45.76 | - |
| 2 | Alberto Juantorena | | 45.92 | - |
| 3 | Jerzy Pietrzyk | | 46.30 | - |
| 4 | Brian Saunders | | 46.42 | - |
| 5 | Leighton Priestley | | 46.45 | - |
| 6 | Mike Sands | | 46.48 | - |
| 7 | Iván Mangual | | 46.56 | - |
| 8 | Charles Joseph | | 46.61 | - |
| Rank | Athlete | Nation | Time | Notes |
| 1 | Mike Solomon | | 45.83 | - |
| 2 | Jan Werner | | 45.88 | - |
| 3 | Maxie Parks | | 45.99 | - |
| 4 | Bernd Herrmann | | 46.07 | - |
| 5 | Markku Kukkoaho | | 46.24 | - |
| 6 | Eddy Gutiérrez | | 46.65 | - |
| 7 | Glen Cohen | | 47.67 | - |
| — | Don Domansky | | | - |
| Rank | Athlete | Nation | Time | Notes |
| 1 | Fred Newhouse | | 45.97 | - |
| 2 | David Jenkins | | 46.18 | - |
| 3 | Franz-Peter Hofmeister | | 46.20 | - |
| 4 | Delmo da Silva | | 46.48 | - |
| 5 | Jozo Alebić | | 46.94 | - |
| 6 | Zbigniew Jaremski | | 47.10 | - |
| 7 | Fred Sowerby | | 48.03 | - |
| 8 | Raymond Heerenveen | | 48.88 | - |
Heats
| Rank | Athlete | Nation | Time | Notes |
| 1 | Herman Frazier | | 46.09 | - |
| 2 | Mike Sands | | 46.52 | - |
| 3 | Zbigniew Jaremski | | 46.68 | - |
| 4 | Peter Grant | | 47.03 | - |
| 5 | Brian Saunders | | 47.24 | - |
| 6 | Carlos Noroña | | 48.46 | - |
| 7 | Hamil Grimes | | 49.24 | - |
| 8 | Wilfrid Cyriaque | | 51.49 | - |
| Rank | Athlete | Nation | Time | Notes |
| 1 | Fred Newhouse | | 45.42 | - |
| 2 | Rick Mitchell | | 46.11 | - |
| 3 | Jan Werner | | 46.19 | - |
| 4 | Alfonso Di Guida | | 46.52 | - |
| 5 | Leighton Priestley | | 46.74 | - |
| 6 | Don Domansky | | 47.24 | - |
| 7 | Errol Thurton | | 48.91 | - |
| 8 | Ahmed Al-Assiri | | 49.72 | - |
| Rank | Athlete | Nation | Time | Notes |
| 1 | Maxie Parks | | 46.12 | - |
| 2 | Delmo da Silva | | 47.21 | - |
| 3 | Iván Mangual | | 47.39 | - |
| 4 | Karl Honz | | 47.47 | - |
| 5 | Eddy Gutiérrez | | 47.89 | - |
| 6 | Renelda Swan | | 49.13 | - |
| — | Stavros Tziortzis | | | - |
| — | Tony Moore | | | - |
| Rank | Athlete | Nation | Time | Notes |
| 1 | Fons Brijdenbach | | 46.73 | - |
| 2 | Jerzy Pietrzyk | | 46.92 | - |
| 3 | Franz-Peter Hofmeister | | 47.17 | - |
| 4 | Ossi Karttunen | | 47.22 | - |
| 5 | Glenn Bogue | | 47.42 | - |
| 6 | Raymond Heerenveen | | 47.44 | - |
| 7 | Wavala Kali | | 48.85 | - |
| 8 | Ricardo Larios | | 50.52 | - |
| Rank | Athlete | Nation | Time | Notes |
| 1 | David Jenkins | | 46.60 | - |
| 2 | Bernd Herrmann | | 46.99 | - |
| 3 | Jozo Alebić | | 47.03 | - |
| 4 | Markku Kukkoaho | | 47.67 | - |
| 5 | Charles Joseph | | 47.72 | - |
| 6 | Samba Dièye | | 47.98 | - |
| 7 | Bjarni Stefánsson | | 48.34 | - |
| Rank | Athlete | Nation | Time | Notes |
| 1 | Mike Solomon | | 47.29 | - |
| 2 | Glen Cohen | | 47.77 | - |
| 3 | Alberto Juantorena | | 47.89 | - |
| 4 | Alfred Daley | | 48.04 | - |
| 5 | Fred Sowerby | | 48.12 | - |
| 6 | Avognan Nogboun | | 48.24 | - |
| 7 | José Carvalho | | 48.47 | - |
