Bernadetta Blechacz (born July 30, 1955 in Kcynia, Kuyavian-Pomeranian) is a former javelin thrower from Poland, who set her personal best in 1979, throwing 62.76 metres. She competed for her native country at the 1980 Summer Olympics in Moscow, USSR, finishing in ninth place (61.46 metres) in the overall-rankings.