Gabriele Wetzko (born 24 August 1954 in Leipzig) is a former German swimmer. Born in Leipzig, East Germany, she competed for East Germany in the 1968 and 1972 Summer Olympics. She is the divorced wife of Wilfried Hartung.
At the 1968 Olympics she competed in the 200 m, 400 m and 4×100 m freestyle events. The 4×100 m freestyle East German team of Gabriele Wetzko, Uta Schmuck, Gabriele Perthes and Roswitha Krause won a silver medal.
At the 1970 European Aquatics Championships in Barcelona, she won four gold medals: in the 100 m and 200 m freestyle, as well as in the 4×100 medley and 4×100 m freestyle relays.
At the 1972 Olympics she competed in the 100 m freestyle, 4×100 m medley relay and 4×100 m freestyle relay, where her team, once again, won the silver medal.
In 1973, she completed her swimming career and began studying for a medical degree, later receiving a degree in economics as well.