The men's 4 × 400 metres relay event was part of the track and field athletics programme at the 1920 Summer Olympics.

The competition was held on Sunday, August 22, 1920, and on Monday, August 23, 1920.

Twenty-four runners from six nations competed.

[1] These were the standing world and Olympic records (in minutes) prior to the 1920 Summer Olympics.

The semi-finals were held on Sunday, August 22, 1920.