| Event: | Men's 4 × 400 metres relay |
| Games: | 1912 Summer |
| Venue: | Stockholm Olympic Stadium |
| Dates: | July 14, 1912 (semifinals) July 15, 1912 (final) |
| Competitors: | 28 |
| Nations: | 7 |
| Gold: | Edward Lindberg Ted Meredith Charles Reidpath Mel Sheppard |
| Goldnoc: | USA |
| Silver: | Pierre Failliot Charles Lelong Charles Poulenard Robert Schurrer |
| Silvernoc: | FRA |
| Bronze: | Ernest Henley George Nicol Cyril Seedhouse James Soutter |
| Bronzenoc: | GBR |
| Next: | 1920 |
The men's 4 × 400 metres relay was a track and field athletics event held as part of the Athletics at the 1912 Summer Olympics programme. It was the debut of the event, which along with the 4 × 100 metre relay marked the first relays of equal legs in the athletics programme (a medley relay had been held in 1908). The competition was held on Sunday, July 14, 1912, and on Monday, July 15, 1912. Twenty-eight runners from seven nations competed.[1] NOCs could enter 1 team of 4 athletes, with up to 2 reserves.[2]
These were the standing world and Olympic records (in minutes) prior to the 1912 Summer Olympics.
| World Record | 3:18.2 |  Harry Schaaf Harry Gissing James Rosenberger Mel Sheppard | New York (USA) | September 4, 1911 | |
|---|---|---|---|---|---|
| Olympic Record | – | none | – | – |
Great Britain, in the first semifinal, set the inaugural Olympic record with 3:19.0.
In the final, the United States set a new world record with 3:16.6.
All semifinals were held on Sunday, July 14, 1912.
Semifinal 1
| width=20 | Place | width=470 | Athletes | width=70 | Time | width=50 | Qual. |
|---|---|---|---|---|---|---|---|
| 1 | align=left | 3:19.0 OR | QF | ||||
| 2 | align=left | 3:22.2 |
Semifinal 2
| width=20 | Place | width=470 | Athletes | width=70 | Time | width=50 | Qual. |
|---|---|---|---|---|---|---|---|
| 1 | align=left | 3:23.3 | QF | ||||
| 2 | align=left | 3:28.5 |
Semifinal 3
| width=20 | Place | width=470 | Athletes | width=70 | Time | width=50 | Qual. |
|---|---|---|---|---|---|---|---|
| 1 | align=left | 3:22.5 | QF | ||||
| 2 | align=left | 3:25.0 | |||||
| 3. | align=left | 3:29.4 |
The final was held on Monday, July 15, 1912.
| width=20 | Place | width=470 | Athletes | width=70 | Time |
|---|---|---|---|---|---|
| 1 | align=left | 3:16.6 WR | |||
| 2 | align=left | 3:20.7 | |||
| 3 | align=left | 3:23.2 |