Alexandra "Xandi" Worisch (born 29 September 1965 in Vienna) is a former synchronized swimmer from Austria. Worisch first competed internationally at the 3rd FINA World Championships 1978 held in what was then West Berlin, Germany. At the 1981 European Aquatics Championships, which took place in Split, Croatia (then Yugoslavia), Worisch won a silver medal in the women's solo event and a bronze in the duet. Worisch's participation in the 1981 Championships was made famous in celebrated photograph by Tony Duffy, of the Allsport photo agency.
Worisch went on to compete at the , placing 10th in the women's solo competition and 10th in the women's duet competition with Eva-Maria Edinger.
Worisch was born to a family of Olympians; her mother, Eva Pfarrhofer, was an Olympic diver, as was her father Franz Worisch and her brother Michael Worisch. Xandi's neice, Nadine Brandl, also went on to compete in synchronized swimming for Austria at the 2008 and 2012 Olympic Games.