The 2019 ITU Triathlon Mixed Relay World Championship was the 11th edition of the mixed relay world championships and the 7th to be held in Hamburg, Germany. The race was hosted on 7 July 2019 to coincide with the 2019 ITU World Triathlon Series Hamburg race, and featured 32 men and 32 women representing 16 countries. The race was around the Binnenalster, an artificial lake in central Hamburg. The race followed the standard mixed relay format, where each athlete would swim 300m, cycle 7 km and run 1.7 km before tagging their next teammate to do the same, with the specified gender order of female—male—female—male.
