Oxfordshire-based Ruy Fonseca heads up the Brazilian eventing team for WEG.
He is joined by three Brazil-based riders: Guto de Faria, Serguei Fofanoff and team debutant Jesper Sifrid Martendal, 28.
The Brazilians are under the care of former British four-star rider Nick Turner, team manager for the next four years.