Gaby Bußmann  Gaby Bußmann (born 8 October 1959 in Haltern) is a German athlete who mainly competed in the 400 metres. She competed for West Germany at the 1984 Summer Olympics held in Los Angeles, U.S. where she won the bronze medal in the women's 4 x 400 metres with her team mates Heike Schulte-Mattler, Ute Thimm and Heidi-Elke Gaugel.