|Full name||Douglas Stewart Allder|
|Date of birth||30 December 1951|
|Place of birth||Hammersmith, London, England|
|Playing position||Left Winger|
|1980–1981||Tooting & Mitcham United||21||(1)|
|1981||Walton & Hersham||?||(?)|
|* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
Douglas Stewart Allder (born 30 December 1951 in Hammersmith, London) is an English former professional footballer. He played as a left winger, making 332 appearances in his career. He was capped for England at youth level.
Allder began his career with Millwall, signing apprentice terms in April 1968, before becoming a professional in October 1969. He made his debut in the 1969–70 season. In his six years with Millwall he made 201 league appearances, scoring 10 goals. He has been voted into Millwall's unofficial hall of fame.
In July 1975 Allder moved to Leyton Orient in exchange for Terry Brisley and Barrie Fairbrother. He left Orient in 1977, after 41 league appearances without scoring. 2000, He had a month's trial with Torquay United in August 1977, making one appearance as a substitute for Lindsay Parsons in a League Cup tie away at Cardiff City. In September 1977 he had another month long trial with Watford, making a single appearance away at Rochdale in which he was substituted at half-time.
In October 1977, Allder joined Brentford, and became a regular in the side who were promoted along with former club Watford at the end of the season. He was to finish his league career at Griffin Park, making 88 league appearances and scoring twice. He left for Isthmian League side Tooting & Mitcham in July 1980. He moved to Staines Town in March 1981, before moving to Walton & Hersham in September 1981. In 1992 he was working at the Millwall Centre of Excellence.