Katharine "Kati" Jansen (akaberekwa musi wa12 February 1934) mutambi wekushambira weGermany akasiya basa uyo akahwina menduru yebronze pa1954 European Aquatics Championships
. Akakwikwidza kumaOlympics a1952 na1956 mumakwikwi e100 m uye 4 × 100 m freestyle uye akapedza wechina mu relay muna 1956.