John Duncan Sinclair Gordon (11 September 1931 – 26 May 2001) was an English professional footballer who played for Portsmouth and Birmingham City in the First Division as an inside forward. He made a total of 489 appearances for home-town club Portsmouth, placing him fourth in their all-time appearances list. During his three seasons at Birmingham City he was the club's top scorer in 1959–60, became their all-time top goalscorer in European competition, and played in the 1960 Inter-Cities Fairs Cup Final against Barcelona. On his return to Portsmouth he helped them win the Third Division championship in 1961–62.

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