Date of Birth: 
About Maria Ćwiertniewicz
- Maria Cwiertniewicz (born August 18, 1952, in Kroscienko nad Dunajcem) is a former Polish slalom canoeist who competed in the 1970s.
- She won two medals in the K-1 event at the ICF Canoe Slalom World Championships with a gold in 1975 and a silver in 1973. Cwiertniewicz also finished fourth in the K-1 event at the 1972 Summer Olympics in Munich.
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