The 2012 ITU Triathlon Mixed Relay World Championship was held in Stockholm, Sweden on 26 August 2012.

The team championship event coincided on the same weekend as the 2012 ITU World Triathlon Series Stockholm race.

[1] The ITU events in Stockholm were the first to occur since the Olympic games almost two weeks prior, with some Olympians who participated in 2011 team Championship choosing not to take part in this year's event.

Twenty-two teams representing 20 countries began the competition.

[1][2] The American team failed to finish after falling too far behind its competition.