1921 Netherlands–Germany international aquatics competitions
International aquatics competitions took place on 6 August 1921 in Essen, Germany. The Dutch Marie Beisenherz of the Amsterdamsche Dames Zwemclub (ADZ) won the 100 metres breaststroke in a time of 1:28.8. In the relay event both teams finished in the same time. Because the German team didn’t want to do a race again,  became the winner. Awater polo match between De Dolfijn and Essener Schwimmverein was won by the Dutch team with 5-1.