Campbell Martin, born March 10, 1960 is a Scottish politician. A member of the Scottish National Party (SNP) he was elected to the Scottish Parliament to represent the West of Scotland at the 2003 election, after having worked previously for Kay Ullrich , a former SNP MSP.

He was a prominent backer of Dr Bill Wilson who stood against John Swinney for the SNP leadership in 2003. He has been critical of the direction of the SNP since becoming a MSP, believing they are being dragged into the political centre away from their traditional left-of-centre position. He also believes the party is not vociferous enough in its advocation of Scottish independence.

He was suspended from the Scottish National Party on 25 April, 2004 after publically criticing John Swinney, and was expelled from the SNP on 10 July 2004 — soon after Swinney had resigned.