Vlasta Průchová (12 July 1926, Ružomberok – 16 June 2006, Prague) was a Czech jazz singer. From the second half of the 1940s, she gradually built up her leading position in the Czech jazz scene. Průchová was the mother of the renowned Czech-American pianist and composer Jan Hammer.
Průchová was born to Czech parents who worked in Ružomberok, Slovakia at that time. She was baptised by the Slovak priest Andrej Hlinka. At the end of 1938, the family was forced to leave Slovakia, and they resided in Prague.
Following the Second World War, Průchová had her first experience with jazz music. At the Filmové žně (Film Harvest Festival) in Zlín she attended the performance of the "ensemble of swing stars" Elit Club. Among the members of the band was also her future husband, Jan Hammer Sr. She later saw their performances in the Prague palace Metro, where the band played in the "swing pub" Akvarium. From her youth, she showed a musical talent in singing and Jan Hammer Sr. f