Tags: Swimmer.
Mariusz Siembida (born March 21 1975 in Puławy Lubelskie) is a retired backstroke swimmer from Poland who competed for his native country at two consecutive Summer Olympics starting in 1996 (Atlanta Georgia).A member of Lublinianki he is best known for winning the bronze medal at the 1997 European Swimming Championships in the men’s 4×100 m medley relay alongside Marek Krawczyk Marcin Kaczmarek and Bartosz Kizierowski.