2021 World Athletics Relays – Men's 4 × 100 metres relay

The men's 4 × 100 metres relay at the 2021 World Athletics Relays has been held at the Silesian Stadium on 1 and 2 May. Only 18 teams will participate on 24 possible qualifiers, with the USA (CR), Jamaica (WR), Canada, Great Britain, Trinidad and Tobago, and China (WL) not entering.On the 19 teams qualified by entry standard (38.80), Thailand and Chinese Taipei also declined to participate, same as Australia, first of the following top list. The 10 best placed teams will qualify for the 2022 World Championships in Eugene.

2021 World Athletics Relays – Men's 4 × 100 metres relay

The men's 4 × 100 metres relay at the 2021 World Athletics Relays has been held at the Silesian Stadium on 1 and 2 May. Only 18 teams will participate on 24 possible qualifiers, with the USA (CR), Jamaica (WR), Canada, Great Britain, Trinidad and Tobago, and China (WL) not entering.On the 19 teams qualified by entry standard (38.80), Thailand and Chinese Taipei also declined to participate, same as Australia, first of the following top list. The 10 best placed teams will qualify for the 2022 World Championships in Eugene.