Gary Smith (born 1965) is a Scottish trade union leader.

Born in Edinburgh,^[1] Smith completed an apprenticeship as a gas fitter, joining the GMB at the age of 16. He became a shop steward and when he was 26 the union paid for him to study at Ruskin College, which he followed with a master's degree in industrial relations from Warwick University.^[2][3]

After completing his education, Smith returned to working in the gas industry, and to trade union activism. He began working full-time for the union, as Recruitment Officer, then as a Senior Organiser, National Officer, and then as National Secretary for Commercial Services. In 2015, he became the union's Scotland Secretary.^[2] In this role, he was frequently critical of the Scottish National Party government.^[4] A supporter of Keir Starmer's leadership of the Labour Party, he opposed Richard Leonard's efforts to remain leader of Scottish Labour, despite Leonard being a member of the GMB.^[3]

In 2021, Smith was elected as General Secretary of the union, defeating Rehana Azam and Giovanna Holt. As General Secretary, he pledged to implement the recommendations of a report by Karon Monaghan QC, which argued that the union had problems with "bullying, misogyny, cronyism and sexual harassment".^[3]

Smith urged the Labour Party to back fracking in September 2022, telling them not to bow to the "bourgeois environmental lobby".^[5] In August 2023, Smith criticised the expansion of the London Ultra-Low Emissions Zone and called for the Labour Party to rethink its plans to ban new oil and gas exploration in the North Sea.^[6]