William Dixon Maddren (11 January 1951 – 29 August 2000) was an English professional football player and manager. A one-club man, he made all his professional club appearances for Middlesbrough between 1968 and 1979, and went on to manage the club from 1984 to 1986.

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When Malcolm Allison became Middlesbrough manager in 1982 Maddren returned to Ayresome Park as physiotherapist. By then Boro were struggling in the old Second Division. Allison was sacked on 24 March 1984, and was replaced by Jack Charlton as caretaker manager with Maddren as assistant. The new management team helped to avoid relegation and Maddren was promoted to post of manager at the season's end.^{[citation needed]} In his first full season, 1984–85, Middlesbrough struggled and avoided relegation on the last day of the season.^{[citation needed]} The following season Maddren was sacked with 13 games remaining, replaced by his assistant Bruce Rioch. Boro were relegated at the end of the season to the Third Division and the club went into liquidation.

Following his sacking Maddren concentrated on his sports shop business. The Willie Maddren Trophy is a charity football competition, whose proceeds go towards the Mike Findley MND Fund.^{[citation needed]}

In 1995, Maddren was diagnosed with a terminal muscle-wasting disease motor neurone disease (MND). He became a campaigner for MND research, raising over £200,000 including £40,000 from his autobiography Extra Time. In 1996, a benefit match was arranged at the Riverside Stadium between Middlesbrough and Internazionale.^[2]

He died on 29 August 2000 at a hospice in Stockton-on-Tees, aged 49.