Jonathan Douglas Evans, Baron Evans of Weardale, KCB, DL (born 1958) is a British life peer who formerly served as the Director General of the British Security Service, the United Kingdom's domestic security and counter-intelligence service. He took over the role on the retirement of his predecessor Dame Eliza Manningham-Buller on 21 April 2007. Evans was succeeded by Andrew Parker on 22 April 2013.