The Shadow Chief Secretary to the Treasury is the most junior member of the Shadow Cabinet, and is the deputy to the Shadow Chancellor of the Exchequer. The Shadow Chief Secretary to the Treasury acts as the primary opposition to the equivalent Governmental position, the Chief Secretary to the Treasury, who is deputy to the Chancellor of the Exchequer. Currently the position of Shadow Chief Secretary to the Treasury is held by Darren Jones of the Labour Party.

The Chief Secretary to the Treasury is a ministerial office in the government of the United Kingdom and is the second most senior ministerial office in HM Treasury, after the Chancellor of the Exchequer. The office was created in 1961 to share the burden of representing HM Treasury with the chancellor.