William Thomas Rodgers, Baron Rodgers of Quarry Bank,, is a British politician and life peer. As a Labour Party member of Parliament, he served as Secretary of State for Transport from 1976 to 1979, and was one of the "Gang of Four" of senior Labour politicians who defected to form the Social Democratic Party (SDP). He subsequently helped to lead the SDP into the merger that formed the Liberal Democrats in 1988, and later served as the party's leader in the House of Lords between 1997 and 2001.

The secretary of state for transport, also referred to as the transport secretary, is a secretary of state in the Government of the United Kingdom, with overall responsibility for the policies of the Department for Transport. The incumbent is a member of the Cabinet of the United Kingdom.