Athletics at the 1920 Summer Olympics – Men's 4 × 100 metres relay
The men's 4 × 100 metres relay event was part of the track and field athletics programme at the 1920 Summer Olympics. It was the second appearance of this event. The competition was held on Saturday, August 21, 1920 and on Sunday, August 22, 1920. Fifty-two runners from 13 nations competed.
Records
These were the standing world and Olympic records prior to the 1920 Summer Olympics.| World Record | 42.3 |  Otto Röhr Max Herrmann Erwin Kern Richard Rau | Stockholm | July 8, 1912 |
| Olympic Record | 42.3 | Otto Röhr Max Herrmann Erwin Kern Richard Rau | Stockholm | July 8, 1912 |
In the final the team of the United States set a new world record with 42.2 seconds.
Results
Semifinals
The semi-finals were held on Saturday, August 21, 1920.Semifinal 1
| Place | Athletes | Time | Qual. |
| 1 | 43.0 | Q | |
| 2 | 44.4 | Q | |
| 3 | 44.6 | ||
| — | DQ | ||
| — | DQ |
Semifinal 2
| Place | Athletes | Time | Qual. |
| 1 | 43.0 | Q | |
| 2 | 43.3 | Q | |
| 3 | 43.5 | ||
| 4 | 43.7 |
Semifinal 3
| Place | Athletes | Time | Qual. |
| 1 | 43.4 | Q | |
| 2 | 43.8 | Q | |
| 3 | 44.4 | ||
| 4 | 44.2 |
Final
The final was held on Sunday, August 22, 1920.| Place | Athletes | Time |
| 1 | 42.2 WR | |
| 2 | 42.5 | |
| 3 | 42.8 | |
| 4 | 43.0 | |
| 5 | 43.3 | |
| 6 | 43.6 |