Wladimir "Wally" Tax (Dutch pronunciation: [ʋlaːdimir ʋɑli tɑks]; 14 February 1948 – 10 April 2005) was a Dutch singer and songwriter. He was founder and frontman of the Nederbeat group The Outsiders (1959–1969) and the rock group Tax Free (1969–1971). After commercial and artistic success with The Outsiders in the late 1960s, he had a brief solo career in the 1970s, and then was a successful songwriter, producing a number of hit songs for Dutch artists. He faded into obscurity in the 1980s; after his death in 2005 two benefit concerts in Amsterdam proved his lasting popularity and influence.