William Haddow Pettigrew (born 2 October 1953) is a Scottish former footballer, who played as a striker for Motherwell, Dundee United, Hearts, Morton and Hamilton Academical.
Pettigrew started his career with Hibernian, but left them for junior club East Kilbride Thistle after failing to make a first-team breakthrough.
He joined Motherwell in 1972, where he had his most prolific goalscoring spell, averaging better than a goal every two league games.
He also played in the winning 1980 Final team, but this time the goals were scored by the two strikers who were the club's first choice pairing for the next few seasons, Paul Sturrock and Davie Dodds.
In 1981, Pettigrew moved to Heart of Midlothian for a £120,000 fee, going on to achieve promotion to the Premier Division at the end of the 1982-83 season.