Wilfred Norris Slack (12 December 1954, Troumaca, St Vincent – 15 January 1989, Banjul, The Gambia) was an English cricketer, who played in three Test matches and two One Day Internationals for England in 1986.
A left-handed opening batsman, Slack was a victim of mysterious blackouts while playing, and died, apparently of a heart attack, while batting in The Gambia, aged 34.