Hetty Balkenende (anonziwo Hettie, akaberekwa muna 1939) aimbova mutambi wekushambira akasununguka uye mutambi wekushambira akabatana kubva kuNetherlands uyo akahwina menduru yesirivheri mu4 × 100 m freestyle relay pa1954 European Aquatics Championships
. Muna 1955, akabatsira timu yeDutch kuisa rekodhi repasi rose muchiitiko chimwe chete; akakundawo mazita maviri emunyika (100 m uye 400 m freestyle), akaputsa zvinyorwa zviviri zvemunyika mumamita mazana mana akasununguka, uye rekodhi renyika pamakumbo mazana masere nemakumi masere <unk> zvose mugore rimwe chete.