The
Mongol invasions of Vietnam or
Mongol-Vietnamese War refer to the three times that the
Mongol Empire and its chief khanate the
Yuan dynasty invaded
Đại Việt (now northern Vietnam) during the
Trần dynasty and
Champa: in 1258, 1285, and 1287–1288. Although ultimately a failure for the
Mongols, both the Trần dynasty and Champa decided to accept the nominal supremacy of the Yuan dynasty in order to avoid further conflicts.