Dennis Sydney Viollet (born September 20, 1933 in Manchester , † March 6, 1999 in Jacksonville , Florida ) was an English football player and football coach .

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Viollet joined Manchester United on September 1, 1949. The striker got his first professional contract in 1950 and made his debut on April 11, 1953 against Newcastle United . He was English champion with Manchester United in 1956 and 1957.

Viollet was one of the survivors of the plane crash in Munich on February 6, 1958, in which 23 people died, including eight of his teammates.

In total, he played 291 times for Manchester United and scored 178 goals. During his time at this club, he played twice in the English national team in games against Hungary and Luxembourg . In 1962 he was replaced by Matt Busby