The Vlach Quartet (Czech: Vlachovo kvarteto) is the name of two consecutive classical string quartet musical ensembles, based in Prague, which are linked by family tradition (father and daughter) in the Vlach family. The original Vlach Quartet was founded in 1949 and wound up in 1975. In 1982 the New Vlach Quartet (Nové Vlachovo kvarteto) was founded with guidance from the original founder, and came to be known as the Vlach Quartet of Prague (Vlachovo kvarteto Praha). It is still active as a highly-esteemed musical ensemble.