The 2021 World Athletics Relays have been held in Chorzów, Poland from 1 to 2 May 2021.

As the World Athletics Relays are not a championship, there are no champions or medalists, but just winners.

[5] 37 nations were due to take part in the competition, before the renouncement of Canada,[6] India,[7] Jamaica,[8] Nigeria,[9] and Trinidad and Tobago.

[10][11] Other notable absences include Australia, China and the USA, who will all be missing the event for the first time.

Spanish Ángel David Rodríguez, 41, is the oldest athlete entered for the event, while 17-year-old Nigerian sprinter Imaobong Nse Uko is the youngest competitor.