Keith Mason (born 19 April 1951) was, until 1 November 2011, the Chief Executive of the Science and Technology Facilities Council (STFC) of the United Kingdom. He assumed the post on 1 April 2007 after the merger of the Council for the Central Laboratory of the Research Councils (CCLRC) and the Particle Physics and Astronomy Research Council (PPARC), having previously been chief executive of PPARC.